{"title":"pH, EC \u0026 TDS Meters","description":null,"products":[{"product_id":"general-hydroponics-ph-down-liquid-1-quart","title":"General Hydroponics pH Down Liquid  1-Quart","description":"The acid formulation uses food grade phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":47473612751168,"sku":"","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/ACHR138848.jpg?v=1702322718"},{"product_id":"general-hydroponics-ph-test-kit-1oz","title":"General Hydroponics pH Test Kit 1oz","description":"The General Hydroponics pH Test Indicator can help you maintain an ideal pH level (which is between 5.5 and 6.5). This can be achieved by monitoring your pH using the super concentrated drops found with the test indicator. Based on the test results  pH Up or pH down (available separately) can be added to adjust the pH as needed. The General Hydroponics pH Test Indicator works across a wide pH spectrum (pH 4.0 - 8.5). Kit includes sampling tube  reagent  and color comparison for easy and reliable testing. Brand Name: General Hydroponics Product Type: Hydroponic pH Test Kit Height: 5.5 in. Width: 1 in. Length: 3 in. 1 oz No","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":47477250490688,"sku":"","price":8.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/14529a96-99d7-46bb-9332-38d2fac09482.8656d3d0bb7d2be6eb2f61041595bbc6.jpg?v=1702334010"},{"product_id":"ph-up-liquid-ph-adjuster-1-quart-by-general-hydroponics","title":"General Hydroponics pH up Liquid 1-Quart","description":"pH UP by General Hydroponics - 1 Quart - Raise pH of Water. pH Up by general hydroponics is a mild base solution that is perfect for raising the pH of water for gardening  especially microgreens  which are sensitive to the pH of water (preferring a pH of around 6). pH UP: 1 Quart Bottle Instructions on labelIf you are looking for professional grade pH measurement and adjustment  we recommend the pH Control Kit.","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":47477348827456,"sku":"","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/4cb3eab6-ea06-4827-b575-e5e4b961ad4d.006b1474ea693efa1bfbd3c7a45bf045.jpg?v=1702334437"},{"product_id":"microbe-life-hydroponics-ph-down-32oz","title":"MICROBE Life Hydroponics pH Down 32oz","description":"It is formulated with R\/O and UV sterilized water and combine two pH adjusters for buffered effectiveness. It contains three electrolytes to help maintain osmotic balance.","brand":"Microbe Life Hydroponics","offers":[{"title":"Default Title","offer_id":47556154949952,"sku":"","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/c6d7cb43-0d96-44cc-9741-59ae86ea38ea_1.715621c8e70587b523269bb1ebff9549.jpg?v=1703968524"},{"product_id":"general-hydroponics-ph-down-liquid-1-gallon","title":"General Hydroponics pH Down Liquid  1-Gallon","description":"The acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":47559553581376,"sku":"","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/380ebf82-cc26-43b4-a05f-409dedd663a9.569d74237f93a590e76d6c8d819688cd.jpg?v=1704129307"},{"product_id":"advanced-nutrients-ph-up-4l","title":"Advanced Nutrients pH-Up 4L","description":"Advanced Nutrients pH-Up 4L","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":47571837354304,"sku":"","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/5e0422b8-0358-4740-89d2-15cf59231fbc_1.bb380186e7c1ebeb5d37054c69413877.jpg?v=1704306939"},{"product_id":"advanced-nutrients-ph-down-4l","title":"Advanced Nutrients pH-Down 4L","description":"Advanced Nutrients pH-Down 4L","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":47571837387072,"sku":"","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/34bbde7d-8472-49a0-bb16-9456fa50420e_1.9c8628b6b4493b79ef5106fa32a6117b.jpg?v=1704306943"},{"product_id":"advanced-nutrients-ph-up-1l","title":"Advanced Nutrients pH Up 1L","description":"Advanced Nutrients pH Up is the most concentrated pH adjuster there is on the market. Perfect for larger reservoirs.DIRECTIONS:Use small amounts when adjusting the nutrient solution to affect the pH level, as required. Use to maintain the optimum pH level of 5.5 to 5.8 for hydroponics and 6.2 to 6.3 for sphagnum moss and plants in containers. For best results, check the pH level daily.","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":47571861700928,"sku":"","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/AGCH_1_20181029477496666.jpg?v=1704307283"},{"product_id":"advanced-nutrients-ph-down-1l","title":"Advanced Nutrients pH-Down 1L","description":"Advanced Nutrients pH-Down 1L","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":47571861766464,"sku":"","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/AGCH_1_20181029160543815.jpg?v=1704307285"},{"product_id":"advanced-nutrients-ph-up-500ml","title":"Advanced Nutrients pH-Up 500mL","description":"Advanced Nutrients pH Up is the most concentrated pH adjuster there is on the market. Perfect for larger reservoirs. DIRECTIONS: Use small amounts when adjusting the nutrient solution to affect the pH level, as required. Use to maintain the optimum pH level of 5.5 to 5.8 for hydroponics and 6.2 to 6.3 for sphagnum moss and plants in containers. For best results, check the pH level daily. Acidity versus alkalinity are key factors in your crop's water and root zone, as measured by ph. If you have too high or...","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":47572061454656,"sku":"","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1878.png?v=1718229266"},{"product_id":"general-hydroponics-ph-test-indicator-8-oz","title":"General Hydroponics pH Test Indicator 8 oz","description":"General Hydroponics pH Test Indicator 8 oz","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":47572250820928,"sku":"","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/41mcBABQJ_2BL._SL160.jpg?v=1704317318"},{"product_id":"general-hydroponics-ph-control-kit-12-cs","title":"General Hydroponics pH Control Kit (12\/Cs)","description":"To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydroponics nutrient products generally do not experience problems maintaining the proper pH range because our formulas are pH buffered. However, some important exceptions do exist. Acid content can reach unacceptable levels when nutrient solutions are mixed with poor quality water or pH unstable media, such as rock wool and gravel products, are used, and when high plant growth rates destabilize the nutrient mix due to rapid nutrient absorption by the crop. pH Down: Acid formulated using food-grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high to lower the pH to the proper level.","brand":"General Hydroponics","offers":[{"title":"Default Title","offer_id":47742706909504,"sku":"","price":19.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/44834f2c-5c47-443f-a739-b3c2d1ec8ccb.1eafec7226420fc5b16f2f0b7077ba8e.jpg?v=1706129146"},{"product_id":"hanna-hi7010-012-groline-ph-10-01-calibration-buffer-120ml","title":"Hanna HI7010-012 GroLine pH 10.01 Calibration Buffer 120ml","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHI7010-012 is a high quality pH 10.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 2 years from the date of manufacture for an unopened bottle.\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSupplied with Certificate of Analysis\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAccuracy of +\/- 0.02 pH @ 25°C\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTemperature chart of the actual pH value at various temperatures printed on each bottle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47750110216512,"sku":"","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_0994.jpg?v=1706202138"},{"product_id":"hanna-hi3895-npk-soil-chemical-test-kit-10-tests-each","title":"Hanna HI3895 NPK Soil Chemical Test Kit (10 tests each)","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe HI3895 is a chemical test kit that uses colorimetry and turbidimetry to measure four parameters common in soil testing: nitrogen, phosphorus, potassium, and pH. The HI3895 is supplied with all of the necessary reagents and equipment to perform each analysis, and all reagents are individually available as they run out. Hanna’s Quick Soil Test Kit provides users with a fundamental tool to assess important characteristics related to soil quality.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eFeatures at-a-glance\u003c\/h3\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eComplete setup\u003c\/h4\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAll required materials are included with the test kit, such as the test tubes, color comparison cards, reagents and solutions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eReplacement reagents available\u003c\/h4\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThere is no need to buy a new kit when reagents are exhausted. The reagents for each parameter can be ordered individually.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eSignificance of Use\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe soil pH range from pH 5.5 to 7.5 is inclusive of most plants; however, some species prefer a more acidic or alkaline environment. Nevertheless, every plant thrives within a particular pH range. pH strongly influences the availability of nutrients and the presence of microorganisms and plants in the soil. The three macronutrients that are most needed by plants are nitrogen (N), phosphorus (P), and potassium (K). Other elements, the so-called microelements, are generally present in sufficient quantities in the soil as plants need them only in smaller doses.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47784401338688,"sku":"400000041285","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1016.jpg?v=1706552664"},{"product_id":"hanna-instruments-hi7007-12-groline-ph-7-01-calibration-buffer-120ml","title":"Hanna Instruments HI7007-12 GroLine pH 7.01 Calibration Buffer 120ml","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHI7007-012 is a high quality pH 7.01 calibration buffer produced in accordance with ISO 3696\/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. Reported values are accurate to +\/- 0.02 pH @ 25\u003c\/span\u003e\u003csup data-mce-fragment=\"1\"\u003e°\u003c\/sup\u003e\u003cspan data-mce-fragment=\"1\"\u003eC and are traceable to NIST Standard Reference Materials (SRMs).\u003c\/span\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47834278887744,"sku":"","price":11.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1062.jpg?v=1707163683"},{"product_id":"hanna-instruments-hi98318-groline-waterproof-ec-tds-ppm-tester","title":"Hanna Instruments HI98318 GroLine Waterproof EC\/TDS (ppm) Tester","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe GroLine Waterproof EC\/TDS Tester is made specifically for hydroponics, provides a simple, inexpensive solution to measure fertilizer concentration in a nutrient solution.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe HI98318 EC\/TDS tester has a graphite sensor that reduces the polarization effect common with amperometric testers that use two stainless steel pins.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAutomatic calibration is achieved easily. Simply submerge the sensor in calibration solution and the meter will automatically detect the calibration standard (5.00 mS\/cm in Quick Cal mode or 1.41 mS\/cm in standard calibration mode). Temperature is automatically compensated for with the integrated temperature sensor.\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eFeatures at-a-glance\u003c\/h4\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWaterproof\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFast Automatic Temperature Compensation with exposed temperature probe\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eGraphite sensors that reduce polarization effects\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e0.5 (500 ppm) and 0.7 (700 ppm) selectable EC to TDS conversion factors\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSingle point automatic calibration using Quick Cal standard or 1.41 mS\/cm in standard calibration mode\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e250 hour battery life\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47834350387520,"sku":"","price":84.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1068.jpg?v=1707165502"},{"product_id":"hanna-hi70061g-groline-general-purpose-cleaning-solution-sachets-20-ml","title":"Hanna HI70061G GroLine General Purpose Cleaning Solution Sachets, 20 mL","description":"\u003cp data-mce-fragment=\"1\"\u003eHI70061G is a high quality cleaning solution designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSpecially formulated for cleaning GroLine electrodes.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSingle-use sachets for convenience.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePerfect for use with GroLine testers and portable meters!\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47879469826368,"sku":"","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1089.jpg?v=1708194738"},{"product_id":"hanna-hi98331-soil-test™-direct-soil-conductivity-tester","title":"Hanna HI98331 Soil Test™ Direct Soil Conductivity Tester","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature. With a compact size, single button operation, and automatic calibration, Soil Test is an excellent choice for taking direct conductivity measurements in soil.\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNo need for soil slurries with the steel penetration electrode.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIntegrated temperature sensor for automatic temperature compensation.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eGreat for environmental and agricultural testing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47879551975744,"sku":"","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1097.jpg?v=1708196101"},{"product_id":"hanna-hi70300-023","title":"Hanna HI70300-023 GroLine Electrode Storage Solution (230 mL)","description":"\u003cp\u003eHI70300-023 is a GroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated. Ideally a storage solution should be used; never store an electrode in distilled or deionized water. The Hanna Instruments storage solution is specifically formulated to minimize microbial growth and to prevent any diffusion\/osmotic effects from storing a probe in a solution with the highly concentrated inner reference electrolyte. Storing your pH and\/or ORP electrodes in a storage solution will also keep the junction clear. Maintaining the hydrated layer and clear junction will help to ensure a fast and reliable measurement. In the case of cleaning your pH electrode in one of our cleaning solutions, we recommend soaking the electrode in the HI70300-023 GroLine storage solution for at least one hour before taking measurements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpecial formulation to minimize microbial growth and osmotic\/diffusion effects between the solution and inner reference electrolyte\u003c\/li\u003e\n\u003cli\u003eManufactured specifically for pH and ORP electrodes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47925881962816,"sku":"","price":16.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1200.jpg?v=1708905517"},{"product_id":"hanna-hi9814-groline-waterproof-portable-ph-ec-tds-meter","title":"Hanna HI9814 GroLine Waterproof Portable pH\/EC\/TDS Meter","description":"\u003cp style=\"font-weight: 400;\"\u003e\u003cspan\u003eO\u003c\/span\u003e\u003cspan\u003ene of the best meters for hydroponics, \u003c\/span\u003e\u003cspan\u003eour \u003c\/span\u003e\u003cspan\u003eGroLine \u003c\/span\u003e\u003cspan\u003eWaterproof \u003c\/span\u003e\u003cspan\u003ePortable pH\/EC\/TDS Meter (HI9814) \u003c\/span\u003e\u003cspan\u003eis a must-have for growers. Easily manage and \u003c\/span\u003e\u003cspan\u003emonitor\u003c\/span\u003e\u003cspan\u003e your growing nutrients\u003c\/span\u003e\u003cspan\u003e with this customer favorite.\u003c\/span\u003e\u003cspan\u003e Be up in running in no time! \u003c\/span\u003e\u003cspan\u003eThis meter \u003c\/span\u003e\u003cspan\u003earrives with everything \u003c\/span\u003e\u003cspan\u003eyou need for successful\u003c\/span\u003e\u003cspan\u003e testing right out of the box. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cspan\u003eWhether you're a commercial or at-home grower, testing nutrients is easy with Hanna by your side. Verify nutrient results on the spot and start optimizing and generating larger yields. Test 3 parameters at the same time with just one device. Achieve fast, accurate readings for pH, EC\/TDS, and temperature with this meter’s all-in-one probe. \u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli data-aria-level=\"1\" data-aria-posinset=\"1\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"335559685\":720,\"335559991\":360,\"469769226\":\"Symbol\",\"469769242\":[8226],\"469777803\":\"left\",\"469777804\":\"\",\"469777815\":\"hybridMultilevel\"}' data-listid=\"2\" data-font=\"Symbol\" data-leveltext=\"\"\u003e\n\u003cspan data-contrast=\"none\"\u003eDurable \u0026amp; reliable. Can withstand the demands of growing environments \u003c\/span\u003e\u003cspan data-ccp-props='{\"134233117\":false,\"134233118\":false,\"335557856\":16777215,\"335559737\":0,\"335559738\":0,\"335559739\":0}'\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-aria-level=\"1\" data-aria-posinset=\"2\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"335559685\":720,\"335559991\":360,\"469769226\":\"Symbol\",\"469769242\":[8226],\"469777803\":\"left\",\"469777804\":\"\",\"469777815\":\"hybridMultilevel\"}' data-listid=\"2\" data-font=\"Symbol\" data-leveltext=\"\"\u003e\n\u003cspan data-contrast=\"none\"\u003eHand-held, portable size. Easily move around and test where you need to\u003c\/span\u003e\u003cspan data-ccp-props='{\"134233117\":false,\"134233118\":false,\"335557856\":16777215,\"335559737\":0,\"335559738\":0,\"335559739\":0}'\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-aria-level=\"1\" data-aria-posinset=\"3\" data-list-defn-props='{\"335552541\":1,\"335559684\":-2,\"335559685\":720,\"335559991\":360,\"469769226\":\"Symbol\",\"469769242\":[8226],\"469777803\":\"left\",\"469777804\":\"\",\"469777815\":\"hybridMultilevel\"}' data-listid=\"2\" data-font=\"Symbol\" data-leveltext=\"\"\u003e\u003cspan data-contrast=\"none\"\u003eEasy to set-up. Makes testing convenient, simple, and hassle-free\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47930903757120,"sku":"","price":279.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1222.jpg?v=1708988051"},{"product_id":"hanna-hi7007-012-groline-ph-4-01-calibration-buffer-120ml","title":"Hanna HI7004-012 GroLine pH 4.01 Calibration Buffer 120ml","description":"\u003cp\u003eHI7004-012 is a high quality pH 4.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied with Certificate of Analysis\u003c\/li\u003e\n\u003cli\u003eAccuracy of +\/- 0.02 pH @ 25°C\u003c\/li\u003e\n\u003cli\u003eTemperature chart of the actual pH value at various temperatures printed on each bottle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47943145619776,"sku":"","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1237.jpg?v=1709141543"},{"product_id":"hm-digital-ph-80-ph-temperature-water-test-meter","title":"HM Digital PH-80 pH \u0026 Temperature Water Test Meter","description":"HM Digital Handheld Digital pH Meter Model #: PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics, gardening, pools, spas, aquariums, reef tanks, water ionizers, drinking water, and more. It features one-touch automatic digital calibration, water resistance, simultaneous temperature display, sleek lightweight design, large LCD display, automatic temperature compensation (ATC), auto-off function, data-hold function, and low-battery indicator. The meter is factory calibrated to pH 7.0 but can easily be recalibrated to pH 4.0, 7.0, or 10.0 using the meter's simple one-touch process. It includes a cap, batteries, storage solution, and pH 7.0 buffer. The specifications include a pH range of 0-14, temperature range of 1-80°C or 33-176°F, resolution of 0.1 pH and temperature, and accuracy of +\/- 0.2 pH.","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":47943588512064,"sku":"","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/647d4b88-dc7d-4f44-b15c-1589db994a88.a2458054ab4b1f193d2ef53ec18a54c4.jpg?v=1709146979"},{"product_id":"hmdigital-1000ppm-calibration-solution","title":"HM Digital 1000ppm Calibration Solution","description":"NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner. Brand Name: HM Digital Meters Product Type: Hydroponic Measuring Device Height: 3.3 in. Width: 1.3 in. Length: 1.3 in. 3 oz","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":47943604437312,"sku":"","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/products\/efc79b0c-66ed-4991-9373-e22ebc81b2ff_1.cf88a2cc502d05981777a9e647dfbc1a.jpg?v=1709147676"},{"product_id":"hanna-hi7061-012-groline-general-purpose-cleaning-solution-120ml","title":"Hanna HI7061-012 GroLine General Purpose Cleaning Solution 120ml","description":"\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_product_details\"\u003e\n\u003csection data-product-details=\"\" class=\"grid-container product-details\" id=\"product-details\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cdiv data-product-description=\"\"\u003e\n\u003cdiv data-hs-cos-field=\"product_description\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_product_details_\"\u003e\n\u003cp\u003eHI7061-012 is the GroLine general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna's cleaning solutions eliminate impurities and residues that are left on electrode surfaces when immersed in samples during measurement or when stored incorrectly. Hanna suggests cleaning the bulb and junction of your electrode on a regular basis to ensure that the probe is always clean and to prevent any clogging of the junction.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpecially formulated for cleaning electrodes\u003c\/li\u003e\n\u003cli\u003eAir tight seal to ensure quality\u003c\/li\u003e\n\u003cli\u003eExpiration date and lot number\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_widget_12054562849\"\u003e\n\u003csection class=\"banner--product-rich-text\"\u003e\n\u003cdiv class=\"grid-container\"\u003e\n\u003cdiv class=\"align-center\"\u003e\n\u003cdiv class=\"cell small-12 large-10\"\u003e\n\u003cdiv data-hs-cos-field=\"content\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_widget_12054562849_\"\u003e\n\u003cp\u003eThe most common cause for pH measurement inaccuracies is an unclean or improperly cleaned electrode. This is very important to note, because during calibration, the instrument assumes that the electrode is clean and that the standardization curve created during the calibration process will remain a valid reference until the next calibration. pH meters on the market today will allow an offset voltage of approximately ±60 mV. The deviation from 0 mV is not unusual but ideally should be no greater than ±30 mV. The calibration process compensates for the change in offset voltage. If the mV offset continues to deviate and the meter is calibrated with a dirty electrode then inaccurate readings will result.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47960154898752,"sku":"","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1262.jpg?v=1709412280"},{"product_id":"hanna-hi73127-spare-ph-sensor-for-hanna-testers","title":"Hanna Hi73127 Spare pH Sensor for Hanna Testers","description":"\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_product_details\"\u003e\n\u003csection data-product-details=\"\" class=\"grid-container product-details\" id=\"product-details\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cdiv data-product-description=\"\"\u003e\n\u003cdiv data-hs-cos-field=\"product_description\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_product_details_\"\u003e\n\u003cp\u003eThe spare pH sensor is designed as an easy-fit cartridge that locks into place, featuring two o-rings to maintain a watertight seal. With no pins to line up or that can break, this sensor is ideal for quick replacements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasy-to-replace.\u003c\/li\u003e\n\u003cli\u003eExtend the life of your Hanna pH tester with a spare pH sensor.\u003c\/li\u003e\n\u003cli\u003eKeep your pH measurements simple \u0026amp; accurate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_widget_1565715304780\"\u003e\n\u003csection class=\"banner--product-rich-text\"\u003e\n\u003cdiv class=\"grid-container\"\u003e\n\u003cdiv class=\"align-center\"\u003e\n\u003cdiv class=\"cell small-12 large-10\"\u003e\n\u003cdiv data-hs-cos-field=\"content\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_widget_1565715304780_\"\u003e\n\u003cp\u003eReplacing a pH sensor on one of Hanna's compatible testers is both quick and easy. The spare pH sensor is designed as an easy-fit cartridge that locks into place, featuring two o-rings to maintain a watertight seal. Replacement takes a few seconds and does not have any delicate pins that could break.\u003c\/p\u003e\n\u003cp\u003eUse the \u003ca rel=\"noopener\" href=\"https:\/\/www.hannainst.com\/hi73128.html\"\u003eHI73128 replacement electrode tool\u003c\/a\u003e that is included with the pH tester to expertly replace the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47978997645632,"sku":"","price":64.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1273.jpg?v=1709742112"},{"product_id":"hanna-hi98131-groline-hydroponic-waterproof-pocket-ph-ec-tds-temperature-tester","title":"Hanna HI98131 GroLine Hydroponic Waterproof Pocket pH\/EC\/TDS\/Temperature Tester","description":"\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_product_details\"\u003e\n\u003csection data-product-details=\"\" class=\"grid-container product-details\" id=\"product-details\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cdiv data-product-description=\"\"\u003e\n\u003cdiv data-hs-cos-field=\"product_description\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_product_details_\"\u003e\n\u003cp\u003eThe HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature. Simple, two-button meter operation and advanced features, including a selectable EC to TDS conversion factor (0.5 - 500 ppm and 0.7 - 700 ppm). for your essential testing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll measurements in a single, hassle-free tester.\u003c\/li\u003e\n\u003cli\u003eQuick Cal solutions to calibrate pH and conductivity all at once with a single solution.\u003c\/li\u003e\n\u003cli\u003ePerfect for hydroponics, greenhouse, and agriculture use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_widget_1563308262321\"\u003e\n\u003csection class=\"banner--product-col2-details grid-container\"\u003e\n\u003cdiv class=\"col2-detail-group grid-x grid-padding-x grid-padding-y align-right\"\u003e\n\u003cdiv class=\"cell small-12  border-after--blue-wide\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cp\u003eThe HI98131 GroLine pH and TDS water tester feature a large multi-level LCD that displays both pH, EC or TDS and temperature readings simultaneously. The pH readings are displayed with a 0.01 resolution and with an accuracy of +\/-0.05 pH, while the EC and TDS readings are displayed with a 0.01 mS\/cm and 10 ppm (mg\/L) resolution and 2% full-scale accuracy. The EC range of the HI98131 is from 0.01 to 6.00 mS\/cm and TDS is from 0 to 3000 ppm using a 0.5 conversion factor. The HI98131 also offers the option to use a 0.7 (700 ppm) EC to TDS conversion factor. An exposed temperature sensor allows for rapid temperature compensated measurements of EC and TDS. The LCD screen has indicators for calibration status and stability. The battery percent level is displayed at start up alerting the user to the remaining battery power that is available. The HI98131 is a versatile pocket meter designed for hydroponics, greenhouse and agriculture applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47979640193344,"sku":"","price":259.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1281.jpg?v=1709750295"},{"product_id":"hanna-hi70300g-groline-storage-solution-sachets-20-ml-25-pcs","title":"Hanna HI70300G GroLine Storage Solution Sachets, 20 mL (25 pcs.)","description":"\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_product_details\"\u003e\n\u003csection data-product-details=\"\" class=\"grid-container product-details\" id=\"product-details\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cdiv data-product-description=\"\"\u003e\n\u003cdiv data-hs-cos-field=\"product_description\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_product_details_\"\u003e\n\u003cp\u003eHI70300G is a high quality storage solution designed with hydroponics, aquaponics, and greenhouses in mind.\u003c\/p\u003e\n\u003cp\u003eSingle-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpecially formulated for storing GroLine electrodes.\u003c\/li\u003e\n\u003cli\u003eSingle-use sachets for convenience.\u003c\/li\u003e\n\u003cli\u003ePerfect for use with GroLine testers and portable meters!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_widget_1568317029435\"\u003e\n\u003csection class=\"banner--product-col2-details grid-container\"\u003e\n\u003cdiv class=\"col2-detail-group grid-x grid-padding-x grid-padding-y align-right\"\u003e\n\u003cdiv class=\"cell small-12\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cp\u003eHI70300G is a GroLine storage solution that can be used to store your pH electrode*. To ensure an optimum response time, the glass sensor tip and the reference junction of the pH electrode should be kept moist and not be allowed to dry out when not in use. Placing the electrode in a small glass filled with storage solution or replacing the solution in the protective cap is a suitable way to store the electrode. The HI70300G should also be used to rehydrate the electrode after a cleaning procedure by soaking for at least one hour before taking measurements.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47979825791296,"sku":"","price":39.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1282.jpg?v=1709751874"},{"product_id":"hanna-hi7031-023-groline-1413-µs-cm-conductivity-standard-with-certificate-230ml-bottle","title":"Hanna HI7031-023 GroLine 1413 µS\/cm Conductivity Standard with Certificate (230mL Bottle)","description":"\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_product_details\"\u003e\n\u003csection data-product-details=\"\" class=\"grid-container product-details\" id=\"product-details\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cdiv data-product-description=\"\"\u003e\n\u003cdiv data-hs-cos-field=\"product_description\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_product_details_\"\u003e\n\u003cp\u003eHI7031-023 is a GroLine 1,413 µS\/cm conductivity standard that is prepared against a NIST traceable potassium chloride solution and supplied with a certificate of analysis. Hanna conductivity solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna's line of conductivity standards have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied with Certificate of Analysis\u003c\/li\u003e\n\u003cli\u003eTemperature chart of the actual µS\/cm value at various temperatures printed on each bottle\u003c\/li\u003e\n\u003cli\u003eAir tight bottle with tamper-proof seal to ensure quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv data-hs-cos-type=\"module\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" id=\"hs_cos_wrapper_widget_12054410991\"\u003e\n\u003csection class=\"banner--product-rich-text\"\u003e\n\u003cdiv class=\"grid-container\"\u003e\n\u003cdiv class=\"align-center\"\u003e\n\u003cdiv class=\"cell small-12 large-10\"\u003e\n\u003cdiv data-hs-cos-field=\"content\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-general-type=\"widget\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" id=\"hs_cos_wrapper_widget_12054410991_\"\u003e\n\u003cp\u003eHI7031-023 is a premium quality 1,413 µS\/cm conductivity solution standardized with a conductivity meter that has been calibrated with potassium chloride NIST 2202 SRM (Standard Reference Material) in deionized water for analytical use in accordance with ISO 3696\/BS3978. Additional equipment used in preparation of the solutions include certified weight-checked balances, Class A glassware and certified thermometers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":47980004671808,"sku":"","price":16.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1283.jpg?v=1709753059"},{"product_id":"hanna-hi98118-groline-waterproof-ph-tester","title":"Hanna HI98118 GroLine Waterproof pH Tester","description":"\u003cp\u003eThe HI98118 GroLine pocket pH Tester is an affordable way to measure the pH of hydroponic nutrient solutions. The maintaining of an optimal pH is essential to maximize optimum growth. The general rule of thumb is that as pH increases the solubility of minerals and nutrients decrease. It is important that nutrients are soluble for plants to uptake and use for growth. The pH of nutrient solution can also affect the bacteria that fix nitrogen for the plant to use. Every plant has optimum pH levels for growth. Below is a table for the ideal pH range for a variety of plants.\u003cbr\u003e\u003cbr\u003eThe HI98118 can be used to measure the pH in soils as well as nutrient solutions. The North Carolina State University has outlined a procedure known as Pour Through Sampling Method. This method is used for container plants in which 50 ml of leachate is collected from a thoroughly watered plant and then tested.\u003cbr\u003e\u003cbr\u003eTo measure the pH of soil as a slurry the USDA recommends a mixture of 1 part soil to 1 part water. The slurry is allowed to rest for 10 minutes so that the solids will settle out and the pH of liquid above can be measured.\u003cbr\u003e\u003cbr\u003eThe HI98118 is an advanced meter while maintaining simplicity. The front of the meter has two buttons. One is for turning the meter on and off while the other is used to enter the calibration mode. There is a third button in the battery compartment that allows the user to customize the meter to their preference. Customization includes temperature readout in oC or oF, automatic shut off selectable from 8 minutes, 60 minutes or disabled, and lastly the choice of using Hanna's Quick Cal pH\/EC standard or traditional buffers values of pH 4.01, 7.01 and 10.01.\u003cbr\u003e\u003cbr\u003eThe HI98118 features a cloth junction. The reference junction of a pH electrode, also known as a salt bridge, provides an electrical pathway between the internal reference cell and the sample. A cloth or fiber wick juction \u003cspan\u003eprovides a larger surface area than a standard ceramic junction.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eFeatures at-a-glance\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt in temperature sensor for Automatic Temperature Compensated measurements.\u003c\/li\u003e\n\u003cli\u003eCloth junction \u003cspan\u003eproviding a larger surface area than a standard ceramic junction.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eStability indicator that disappears once a stable reading is obtained .\u003c\/li\u003e\n\u003cli\u003eAutomatic calibration to one or two points at a push of a button.\u003c\/li\u003e\n\u003cli\u003eUses Hanna's Quick Cal pH\/EC standard with a pH value of 6.86. The standard can also be used to calibrate conductivity meters to 5,000 μS\/cm .\u003c\/li\u003e\n\u003cli\u003eBattery % level remaining displayed at start up.\u003c\/li\u003e\n\u003cli\u003eLow battery indicator that is displayed when less than 10% battery life is remaining.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48007876673856,"sku":"","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1339.jpg?v=1710177198"},{"product_id":"hanna-hi5036-012-quick-calibration-solution-ph-ec-120ml","title":"Hanna HI5036-012 Quick Calibration Solution pH\/EC 120ml","description":"\u003cdiv id=\"hs_cos_wrapper_product_details\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" data-hs-cos-general-type=\"widget\" data-hs-cos-type=\"module\" data-mce-fragment=\"1\"\u003e\n\u003csection id=\"product-details\" class=\"grid-container product-details\" data-product-details=\"\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-product-description=\"\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"hs_cos_wrapper_product_details_\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" data-hs-cos-general-type=\"widget\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-field=\"product_description\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHI5036-012 is a quick calibration solution for use with Hanna's GroLine pH and\/or EC\/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and\/or conductivity sensors. Each bottle has the lot number and expiration date. Hanna's line of calibration solutions have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle. The HI5036-012 is for 120 mL of calibration solution.\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHermetically sealed to maintain freshness\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTwo calibration solutions for the price of one\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eExpiration date on label\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"js-off-canvas-overlay is-overlay-fixed\" data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"hs_cos_wrapper_widget_12054363662\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_module\" data-hs-cos-general-type=\"widget\" data-hs-cos-type=\"module\" data-mce-fragment=\"1\"\u003e\n\u003csection class=\"banner--product-rich-text\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"grid-container\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"align-center\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"cell small-12 large-10\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"hs_cos_wrapper_widget_12054363662_\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" data-hs-cos-general-type=\"widget\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-field=\"content\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHI5036-012 is a quality quick calibration solution produced in accordance with ISO 3696\/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eQuick Calibration Solution\u003c\/h4\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCalibration solution for Gro line pH and EC\/TDS meters\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003epH calibration buffer value of pH 6.86\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eEC calibration standard value of 5,000 μS\/cm (5.00 mS\/cm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eAir tight bottle with tamper-proof seal\u003c\/h4\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eEnsures quality and freshness of solution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eEach bottle marked with lot number and expiration date\u003c\/h4\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHanna buffers are specially formulated to have an expiration of 5 years from manufacture for an unopened sachet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48044425314624,"sku":"","price":11.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1407.jpg?v=1710613786"},{"product_id":"hanna-hi98330-groline-nutrient-tester","title":"Hanna HI98330 GroLine Nutrient Tester","description":"\u003cp\u003eThe HI98330 nutrient tester is designed to measure the conductivity of the nutrient solutions used in agriculture and hydroponic applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures at-a-glance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIP67 waterproof and floating design\u003c\/li\u003e\n\u003cli\u003eNo user calibration needed\u003c\/li\u003e\n\u003cli\u003eAuto-on when placed in nutrient water\u003c\/li\u003e\n\u003cli\u003eAuto-off 30 seconds after stable measurement\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48577755021632,"sku":"400000043821","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1499.jpg?v=1715722029"},{"product_id":"bluelab-ph-pen","title":"Bluelab pH Pen","description":"\u003cp\u003eProduct Details:\u003c\/p\u003e\n\u003cp\u003e- Features: Measures pH and temperature\u003c\/p\u003e\n\u003cp\u003e- Selectable units for °C \u0026amp; °F\u003c\/p\u003e\n\u003cp\u003e- Backlit LCD display\u003c\/p\u003e\n\u003cp\u003e- Double junction probe (not replaceable)\u003c\/p\u003e\n\u003cp\u003e- Successful pH calibration indicator\u003c\/p\u003e\n\u003cp\u003e- Hold reading function\u003c\/p\u003e\n\u003cp\u003e- Low battery indicator\u003c\/p\u003e\n\u003cp\u003e- Fully waterproof\u003c\/p\u003e\n\u003cp\u003e- Auto off function\u003c\/p\u003e\n\u003cp\u003e- Automatic temperature compensation\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eNow, isn't that handy? The Bluelab pH Pen is the latest innovation in handheld meters. It provides a compact, quick, and convenient way to manage the success of your crops and ensure their optimal growth.\u003c\/p\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":48577779499328,"sku":"400000007311","price":139.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1502.jpg?v=1715722716"},{"product_id":"hm-digital-handheld-tds-3-tester","title":"HM Digital Handheld TDS-3 Tester","description":"\u003cp\u003eThe HM Digital Handheld TDS-3 Tester is a reliable and accurate tool for measuring total dissolved solids in water. With its compact design and quick results, it is perfect for professionals and experts in the water industry. Its digital display and automatic temperature compensation provide precise readings for informed decision making.\u003c\/p\u003e","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":48577787035968,"sku":"","price":28.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1877.jpg?v=1718229179"},{"product_id":"hanna-hi98115-groline-ph-tester","title":"Hanna HI98115 GroLine pH tester","description":"\u003cp\u003e The HI98115 is a GroLine pH tester with advanced features for the measurement of pH in hydroponic nutrient solutions. The HI98115 is a very simple meter to operate with all functions including turning on\/off and calibration are performed with a single button. The HI98115 features a replaceable HI1271 pH electrode that can be changed when needed without having to buy a new meter. The HI98115 is supplied complete with a carrying case and calibration solutions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne-Button Operation\u003c\/li\u003e\n\u003cli\u003eReplaceable pH Electrode\u003c\/li\u003e\n\u003cli\u003e±0.2 pH Accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48622755414336,"sku":"400000041858","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1503.jpg?v=1716052470"},{"product_id":"hanna-hi981030-ph-tester-for-soil","title":"Hanna HI981030 pH Tester for Soil","description":"\u003cp\u003eDesigned to bring simplicity to pH testing of soil, the HI981030 GroLine Soil pH Tester is designed for taking direct pH measurements in soil for environmental and agricultural testing. The built-in probe features an open reference junction, conical glass tip, and a removable sleeve design making it ideal for measuring the pH of soil.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e±0.05 pH accuracy\u003c\/li\u003e\n\u003cli\u003eComes with all the necessary solutions and batteries- everything you need to get started measuring right away.\u003c\/li\u003e\n\u003cli\u003eSpecialized electrode for spot checking the pH of soil and soil slurries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48622981808448,"sku":"400000043814","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1505.jpg?v=1716053812"},{"product_id":"ecowitt-wh51-soil-moisture-sensor","title":"Ecowitt WH51 Soil Moisture Sensor","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSoil Moisture Meter: measures soil moisture content within 72 seconds and the data can be viewed on our free WSView plus App after the WiFi configuration(requires a \u003cspan data-mce-fragment=\"1\"\u003eGW1100\/GW2000\u003c\/span\u003e gateway[sold separately]) to let you know when to water your plant\/lawn\/garden [Accessory Only, Can Not Be Used Alone]\u003c\/li\u003e\n\u003cli\u003eLive Data on APP: requires a \u003cspan data-mce-fragment=\"1\"\u003eGW1100\/GW2000\u003c\/span\u003e WIFI gateway(sold separately) to connect to WiFi, after the WIFI configuration,the live soil moisture data can be viewed on the WSView plus mobile application\u003c\/li\u003e\n\u003cli\u003eGraph \u0026amp; History Records on Ecowitt Weather Server: supported to upload to our free Ecowitt Weather server(ecowitt.net) to view the soil moisture data graph and download the history records on the website; it's recommended to add a shortcut of the website on the home screen of your phone for quick access\u003c\/li\u003e\n\u003cli\u003eSupport Monitoring Multi Locations: The \u003cspan data-mce-fragment=\"1\"\u003eGW1100\/GW2000\u003c\/span\u003eGateway(sold separately) supports MAX 8 WH51 Soil Moisture Sensors. Each new sensor will be recognized as a new channel according to the Power-on sequence\u003c\/li\u003e\n\u003cli\u003eIndoor \u0026amp; Outdoor Use: IP66 waterproof moisture sensor, can be used for indoor outdoor potted plants, lawn, garden and more; Also works with the WH0291 Display Console(Should be at the same RF frequency) \/ HP3501\/WH6006 Weather Station(all sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEcowitt WH51 Soil Moisture Sensor measures soil moisture content quickly and accurately. The data can be accepted by \u003cspan data-mce-fragment=\"1\"\u003eGW1100\/GW2000\u003c\/span\u003e Wi-Fi Gateway(sold separately) and can be viewed on our WSView plus mobile application after the Wi-Fi configuration done.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures: \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e1.Measures moisture content of soil.\u003c\/p\u003e\n\u003cp\u003e2.No display, need to work with \u003cspan data-mce-fragment=\"1\"\u003eGW1100\/GW2000\u003c\/span\u003e WIFI gateway(sold separately) to complete the WIFI configuration on our WSView plus App.\u003c\/p\u003e\n\u003cp\u003e3.After the WIFI configuration, the live soil moisture data can be viewed directly on the WSView plus App.\u003c\/p\u003e\n\u003cp\u003e4.With 0%AD and 100%AD custom mode to manually calibrate the low\/high moisture value so that you can get more accurate result for different soil types\u003c\/p\u003e\n\u003cp\u003e5.The \u003cspan data-mce-fragment=\"1\"\u003eGW1100\/GW2000\u003c\/span\u003e Gateway(sold separately) supports MAX 8 WH51 Soil Moisture Sensors. Each new sensor will be recognized as a new channel according to the Power-on sequence. And please don't forget to attach a label of the channel on each sensor for distinction.\u003c\/p\u003e\n\u003cp\u003e6.Works with WH0291 Display Console(Should be at the same RF frequency)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSpecifications: \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eMoisture Range: 0\u003cspan data-mce-fragment=\"1\"\u003e%\u003c\/span\u003e to 100%;\u003c\/p\u003e\n\u003cp\u003eResolution: 1%\u003c\/p\u003e\n\u003cp\u003eAD setting range:70~200;\u003c\/p\u003e\n\u003cp\u003eInitial value:70\u003c\/p\u003e\n\u003cp\u003e100%AD setting range:0%AD+10~1000; Initial value:500\u003c\/p\u003e\n\u003cp\u003eUpdate Rate: 70 seconds\u003c\/p\u003e\n\u003cp\u003ePower: 1 x AA battery(not included)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eImportant Tips: \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e1. Do not touch the stone or hard rock soil, if the soil is too hard and dry, easy to damage the sensor.\u003c\/p\u003e\n\u003cp\u003e2. Design for testing soil ONLY.\u003c\/p\u003e\n\u003cp\u003e3. It is recommended to insert the sensor totally into the soil and keep it in the soil for 2-3 minutes to get accurate readings.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePackage Included: \u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e1 x Soil Moisture Sensor(NO disply console)\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1 x Cap cover\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e1 x manual\u003c\/p\u003e\n\u003c!----\u003e","brand":"Ecowitt","offers":[{"title":"Default Title","offer_id":48623166488896,"sku":"","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1507.webp?v=1716055466"},{"product_id":"bluelab-ph-7-0-calibration-solution-500ml","title":"Bluelab pH 7.0 Calibration Solution 500mL","description":"\u003cp\u003eElevate your gardening game with Bluelab pH 7.0 Calibration Solution! This 500mL solution ensures accurate pH readings for optimal plant growth. Say goodbye to guessing and hello to precision. Perfect for hydroponics, soil, and more. Trust Bluelab for reliable results and thriving plants.\u003c\/p\u003e\n\u003c!----\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":48691364790592,"sku":"400000017952","price":24.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1882_7b40e8be-c3a0-4f58-9442-5787409bd44c.jpg?v=1718230328"},{"product_id":"bluelab-2-77ec-conductivity-calibration-solution-250ml","title":"Bluelab 2.77EC Conductivity Calibration Solution 250mL","description":"\u003cp\u003eAchieve precise and accurate readings with Bluelab's 2.77EC Conductivity Calibration Solution! This 250mL solution ensures optimal performance of your conductivity meters, making it a must-have for any serious grower. Keep your plants happy and thriving with reliable and consistent readings.\u003c\/p\u003e\n\u003c!----\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":48691379470656,"sku":"400000017983","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1882.jpg?v=1718229618"},{"product_id":"hm-digital-ph-7-0-buffer-solution-20-20ml-packets","title":"HM Digital pH 7.0 Buffer Solution (20-20mL Packets)","description":"\u003cp\u003eElevate your water testing accuracy with HM Digital pH 7.0 Buffer Solution! These convenient packets offer a precise pH level for your water, ensuring the best possible readings. Say goodbye to imprecise results and step up your water testing game. Trust HM Digital for reliable and accurate readings every time.\u003c\/p\u003e\n\u003c!----\u003e","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":48691480232256,"sku":"400000043913","price":32.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1881.webp?v=1718229506"},{"product_id":"hm-digital-1000-ppm-calibration-solution-20-20ml-packets","title":"HM Digital 1000 ppm Calibration Solution (20-20mL Packets)","description":"\u003cp\u003eMaximize accuracy with HM Digital 1000 ppm Calibration Solution! Each convenient 20mL packet helps calibrate your testing equipment to ensure precise readings. Trust in our solution to deliver reliable results every time.\u003c\/p\u003e\n\u003c!----\u003e","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":48691497369920,"sku":"400000043937","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG-9163.jpg?v=1750619490"},{"product_id":"hm-digital-ph-4-0-buffer-solution-20-20ml-packets","title":"HM Digital pH 4.0 Buffer Solution (20-20mL Packets)","description":"\u003cp\u003eBoost your confidence in accurate pH testing with HM Digital pH 4.0 Buffer Solution. Each convenient packet is pre-measured for easy use and ensures precise results. Trust in this solution for reliable and consistent readings. Get your perfect pH balance today!\u003c\/p\u003e\n\u003c!----\u003e","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":48691515031872,"sku":"400000043920","price":32.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1879.jpg?v=1718229348"},{"product_id":"hannah-hi50036p-quick-calibration-solution-for-groline-ph-and-ec-meters-25-x-20-ml-sachets","title":"Hannah Hi50036P Quick Calibration Solution for GroLine pH and EC Meters (25 x 20 mL sachets)","description":"\u003cp\u003eHI50036P is a quick calibration solution for use with Hanna's GroLine pH and\/or EC\/TDS meters. Using the Quick Cal function found in compatible meters allows for  a single point calibration for pH and\/or conductivity sensors. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna's line of calibration solutions have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI50036P is for 25 sachets containing 20 mL of calibration solution.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle use so that fresh solution is always used for accurate calibration\u003c\/li\u003e\n\u003cli\u003eTwo calibration solutions for the price of one\u003c\/li\u003e\n\u003cli\u003eExpiration date stamped on packet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48691722715456,"sku":"400000039732","price":44.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1533.jpg?v=1716487950"},{"product_id":"hanna-hi7007-050-500ml-groline-ph-7-0-calibration-solution","title":"Hanna HI7007-050 500ml Groline pH 7.0 Calibration Solution","description":"\u003cp\u003eHI7007-050 is a high quality pH 7.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied with Certificate of Analysis\u003c\/li\u003e\n\u003cli\u003eAccuracy of +\/- 0.02 pH @ 25°C\u003c\/li\u003e\n\u003cli\u003eTemperature chart of the actual pH value at various temperatures printed on each bottle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48691749257536,"sku":"400000043838","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1534.jpg?v=1716488117"},{"product_id":"hanna-hi77400p-ph-4-01-and-7-01-calibration-buffer-sachets-10-x-20ml-5-each","title":"Hanna HI77400P pH 4.01 and 7.01 Calibration Buffer Sachets (10 x 20mL, 5 Each)","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHI77400P is a set of premium quality pH 4.01 and 7.01 calibration buffer solutions. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna's line of calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI77400P is for 5 sachets of pH 4.01 and 5 sachets of pH 7.01 with each containing 20 mL of buffer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eColor coded label for easy pH buffer value identification\u003c\/li\u003e\n\u003cli\u003eAccuracy of +\/- 0.01 pH @ 25°C\u003c\/li\u003e\n\u003cli\u003eTemperature chart of the actual pH value at various temperatures printed on each sachet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48691787858240,"sku":"400000043845","price":19.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1535.jpg?v=1716488342"},{"product_id":"hanna-hi1285-8-groline-ph-ec-tds-multiparameter-probe","title":"Hanna HI1285-8 GroLine pH\/EC\/TDS Multiparameter Probe","description":"\u003cdiv data-detail-item=\"\" class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003ePre-Amplified pH Electrode\u003c\/h4\u003e\n\u003cp\u003eThe pH electrode circuit has a built-in amplifier that serves to reduce the effects of electrical noise on the high impedance-pH measurement. Electrical noise can come from motors and pumps that are common in greenhouses. The single reference junction design of the pH electrode has a cloth junction that allows ion movement between the inner gel electrolyte and the sample being measured. The advantage of the cloth junction is that it can be extracted from the probe, exposing a fresh surface when readings become drifty or erratic. These features make this probe ideal for use in fertilizer solutions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-detail-item=\"\" class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eAmperometric EC\/TDS Sensor\u003c\/h4\u003e\n\u003cp\u003eEC\/TDS readings are performed by a two-pin amperometric sensor. An alternating voltage is applied to the sensor and the amount of current that passes between the two stainless steel pins determines the amount of dissolved ionic solids present.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-detail-item=\"\" class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eBuilt-In Temperature Sensor\u003c\/h4\u003e\n\u003cp\u003epH and EC\/TDS readings must be temperature compensated in order to obtain accurate results. The built-in temperature sensor of the HI1285-8 provides a speedy temperature reading which is then used to adjust the pH and EC\/TDS results accordingly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-detail-item=\"\" class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003ePolypropylene Body\u003c\/h4\u003e\n\u003cp\u003eThe polypropylene body of the HI1285-8 houses all three sensors within a sturdy, single body design. This body material is suitable for a wide range of applications and excels in harsh grow environments due to its durability. The polypropylene plastic is a high-quality plastic that is chemically resistant to many aggressive chemicals and minimizes breakage due to accidental bumping or dropping of the electrode.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-detail-item=\"\" class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eDIN Connector\u003c\/h4\u003e\n\u003cp\u003eThe HI1285-8 uses a DIN connector. This probe is recommended for use with the HI981420 GroLine Hydroponic Nutrients Monitor for pH, EC, TDS, and Temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48990041309504,"sku":"","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1846.jpg?v=1718207794"},{"product_id":"hanna-hi70039g-groline-5000-us-cm-conductivity-standard-sachets-20-ml-25-pcs","title":"Hanna HI70039G GroLine 5000 uS\/cm Conductivity Standard Sachets, 20 mL (25 pcs.)","description":"\u003cp\u003eUnlock the full potential of your water conductivity measurements with Hanna HI70039G GroLine 5000 uS\/cm Conductivity Standard Sachets! These sachets contain the perfect amount of solution for accurate readings and come in a convenient pack of 25 for multiple uses. Trust in Hanna for consistent, reliable results.\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48990160519488,"sku":"","price":46.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1848.jpg?v=1718208935"},{"product_id":"hanna-hi70031g-groline-1413-us-cm-conductivity-standard-sachets-20-ml-25-pcs","title":"Hanna Hi70031G GroLine 1413 uS\/cm Conductivity Standard Sachets, 20 mL (25 pcs.)","description":"\u003cp\u003eHI70031G is a high quality 1413 uS\/cm conductivity standard designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied with Certificate of Analysis\u003c\/li\u003e\n\u003cli\u003eSingle-use sachets for convenience.\u003c\/li\u003e\n\u003cli\u003ePerfect for use with GroLine testers and portable meters!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48990197055808,"sku":"","price":46.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1849.jpg?v=1718209152"},{"product_id":"hanna-hi70300-50-groline-electrode-storage-solution-500-ml","title":"Hanna HI70300-050 GroLine Electrode Storage Solution (500 mL)","description":"\u003cp\u003eHI70300-050 is a GroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated. Ideally a storage solution should be used; never store an electrode in distilled or deionized water. The GroLine storage solution is specifically formulated to minimize microbial growth and to prevent any diffusion\/osmotic effects from storing a probe in a solution with the highly concentrated inner reference electrolyte. Storing your pH and\/or ORP electrodes in a storage solution will also keep the junction clear. Maintaining the hydrated layer and clear junction will help to ensure a fast and reliable measurement. In the case of cleaning your pH electrode in one of our cleaning solutions, we recommend soaking the electrode in the HI70300-050 GroLine storage solution for at least one hour before taking measurements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpecial formulation to minimize microbial growth and osmotic\/diffusion effects between the solution and inner reference electrolyte\u003c\/li\u003e\n\u003cli\u003eManufactured specifically for pH and ORP electrodes\u003c\/li\u003e\n\u003cli\u003eClearly marked expiration date and lot number\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48990271406400,"sku":"","price":24.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1850.jpg?v=1718209581"},{"product_id":"hanna-hi70007g-groline-ph-7-01-buffer-sachets-20-ml-25-pcs","title":"Hanna Hi70007G GroLine pH 7.01 Buffer Sachets, 20 mL (25 pcs.)","description":"\u003cp\u003eHI70007G is a high quality pH 7.01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied with Certificate of Analysis\u003c\/li\u003e\n\u003cli\u003eSingle-use sachets for convenience.\u003c\/li\u003e\n\u003cli\u003ePerfect for use with GroLine testers and portable meters!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48990345331008,"sku":"","price":46.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1851.jpg?v=1718210088"},{"product_id":"hanna-hi70004g-groline-ph-4-01-buffer-sachets-20-ml-25-pcs","title":"Hanna Hi70004G GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.)","description":"\u003cp\u003eHI70004G is a high quality pH 4.01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied with Certificate of Analysis\u003c\/li\u003e\n\u003cli\u003eSingle-use sachets for convenience.\u003c\/li\u003e\n\u003cli\u003ePerfect for use with GroLine testers and portable meters!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":48990368072000,"sku":"","price":46.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/7335\/3536\/files\/IMG_1852.jpg?v=1718210239"}],"url":"https:\/\/growtime.shop\/collections\/monitor-ph.oembed?page=2","provider":"Grow Time Garden Supply","version":"1.0","type":"link"}