pH & EC Control

57 products

Dial in your water — pH and EC/TDS meters, calibration solutions, and pH up/down adjusters for precise nutrient management.

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HM Digital 1000ppm calibration solution bottle

HM Digital 1000ppm Calibration Solution, additional product view 2

$11.99

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...

Hanna GroLine pH 4.01 calibration buffer bottle, 120 milliliters

$11.99

HI7004-012 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...

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Hanna HI9814 GroLine waterproof portable pH EC TDS meter

Hanna HI9814 GroLine Waterproof Portable pH/EC/TDS Meter, additional product view 2

$279.00

One of the best meters for hydroponics, our GroLine Waterproof Portable pH/EC/TDS Meter (HI9814) is a must-have for growers. Easily manage and monitor your growing nutrients with this customer favo...

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Hanna GroLine electrode storage solution bottle, 230 milliliters

$16.50

HI70300-023 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...

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Hanna HI98331 direct soil conductivity tester

$129.99

The 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,...

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Hanna HI98318 GroLine waterproof EC TDS tester

Hanna Instruments HI98318 GroLine Waterproof EC/TDS (ppm) Tester, additional product view 2

$84.99

The GroLine Waterproof EC/TDS Tester is made specifically for hydroponics, provides a simple, inexpensive solution to measure fertilizer concentration in a nutrient solution. The HI98318 EC/TDS te...

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Hanna GroLine pH 7.01 calibration buffer bottle, 120 milliliters

$11.99

HI7007-012 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 ...

Hanna HI3895 NPK soil chemical test kit package

$29.99

The 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...

Hanna GroLine pH 10.01 calibration buffer bottle, 120 milliliters

$12.99

HI7010-012 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 clear...

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General Hydroponics pH control kit package

General Hydroponics pH Control Kit (12/Cs), additional product view 2

$19.99

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 Hydropon...

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$12.99

General Hydroponics pH Test Indicator 8 oz

Advanced Nutrients pH-Up bottle, 500 milliliters

$19.99

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 ...

Advanced Nutrients pH-Up bottle, 1 liter

$29.99

Advanced Nutrients pH-Up bottle, 4 liters

$59.99

Advanced Nutrients pH-Up 4L

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General Hydroponics pH Down liquid jug, 1 gallon

General Hydroponics pH Down Liquid 1-Gallon, additional product view 2

$31.99

The acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.

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General Hydroponics pH test kit bottle, 1 ounce

General Hydroponics pH test kit, color chart

$8.99

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...

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General Hydroponics pH Down liquid bottle, 1 quart

General Hydroponics pH Down label, ingredients

$12.99

The acid formulation uses food grade phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.⚠️ Hazardous Materials Shipping: This product is cla...

pH & EC Control

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