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 PH-80 pH and temperature water test meter

HM Digital PH-80 pH & Temperature Water Test Meter, additional product view 2

$44.99

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 ...

General Hydroponics pH Up liquid bottle, 1 quart

General Hydroponics pH up Liquid 1-Quart, additional product view 2

$12.99

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 whi...

Advanced Nutrients pH-Down bottle, 1 liter

$29.99

Advanced Nutrients pH-Down 1L.⚠️ Hazardous Materials Shipping: This product is classified as a hazardous material (HazMat) and ships by ground only. It cannot be shipped by air or expedited service...

HM Digital COM-80 pen style TDS EC temperature meter

$49.99

The COM-80 is easily the most advanced economically priced, reliable EC/TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics &...

Ecowitt WH51 wireless soil moisture sensor

Ecowitt WH51 Soil Moisture Sensor, additional product view 2

$32.99

Soil 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 GW1100/GW2000 gateway[sold se...

$149.99

Designed 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-i...

Hanna GroLine general purpose cleaning solution sachets, 20 milliliters

$38.99

HI70061G 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....

Advanced Nutrients pH-Down bottle, 4 liters

$96.99

Advanced Nutrients pH-Down 4L

Microbe Life Hydroponics pH Down bottle, 32 ounces

MICROBE Life Hydroponics pH Down 32oz, additional product view 2

$19.99

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.⚠️ Hazardous Materials Shi...

Luster Leaf Rapitest Soil pH Meter from Bootstrap Farmer at GrowTime Garden Supply

$22.99

⚠️ This item ships separately directly from our supplier partner and will arrive independently from other items in your order.Simple Soil pH Testing Without Batteries or Chemicals Test your soil's ...

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Luster Leaf Rapitest Mini Soil pH Tester 1815 in retail packaging

Luster Leaf Rapitest Mini Soil pH Tester 1815 features and 6-inch probe

$13.99

Compact, reliable, and incredibly easy to use – the Luster Leaf Rapitest Mini Soil pH Tester 1815 is your go-to tool for quick soil testing.This pocket-sized pH meter delivers professional-grade ac...

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Luster Leaf Rapitest Soil pH Meter - No Batteries Required

$14.99

Take the guesswork out of soil health with the Luster Leaf Rapitest Soil pH Meter. Whether you're growing vegetables, flowers, or managing a hydroponic setup, soil pH is critical to nutrient availa...

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$11.99

Take control of your gardening success with the Hydrofarm 2-Way pH & Moisture Meter! Easily measure pH levels and moisture content to ensure optimal plant growth. No more guessing, just results...

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Hanna HI1285-7 pH EC TDS multiparameter probe for HI9814

$180.00

The HI1285-7 is a 3-in-1 pre-amplified multiparameter probe that measures pH, EC/TDS, and temperature within a single polypropylene body. The pH portion of this probe is constructed with a cloth ju...

Hanna cleaning solution for soil deposits sachets, 25 count

$41.00

The HI700663P is a highly effective cleaning solution that is specially formulated for pH electrodes used in agricultural applications. Electrodes can become dirty from use and will produce inaccur...

Hanna GroLine pH 4.01 buffer sachets, 25 count

$46.00

HI70004G 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 lightweigh...

Hanna GroLine pH 7.01 buffer sachets, 25 count

$46.00

HI70007G 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 lightweigh...

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Hanna GroLine electrode storage solution bottle, 500 milliliters

$24.00

HI70300-050 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...

Hanna GroLine 1413 microsiemens conductivity standard sachets, 25 count

$46.00

HI70031G 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 ligh...

Hanna GroLine 5000 microsiemens conductivity standard sachets, 25 count

$46.00

Unlock 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 accu...

Hanna HI1285-8 GroLine pH EC TDS multiparameter probe

Hanna HI1285-8 GroLine pH/EC/TDS Multiparameter Probe, additional product view 2

$200.00

Pre-Amplified pH Electrode The 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 ...

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Hanna pH 4.01 and 7.01 calibration buffer sachets, 10 count

$19.99

HI77400P 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 fresh...

Hanna GroLine pH 7.01 calibration solution bottle, 500 milliliters

$29.99

HI7007-050 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...

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Hanna quick calibration solution sachets, 25 count

$44.99

HI50036P 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 ...

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HM Digital pH 4.0 buffer solution packets, 20 count

$32.99

Boost 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 reli...

HM Digital 1000ppm calibration solution packets, 20 count

$32.99

Maximize 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 reli...

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HM Digital pH 7.0 buffer solution packets, 20 count

$32.99

Elevate 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 imp...

Bluelab 2.77EC conductivity calibration solution bottle, 250 milliliters

$9.99

Achieve 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...

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Bluelab pH 7.0 calibration solution bottle, 500 milliliters

$24.99

Elevate 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. Perf...

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$69.99

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 tur...

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$28.99

The 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 ex...

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$139.99

Product Details: - Features: Measures pH and temperature - Selectable units for °C & °F - Backlit LCD display - Double junction probe (not replaceable) - Successful pH calibration indicator - H...

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$99.99

The HI98330 nutrient tester is designed to measure the conductivity of the nutrient solutions used in agriculture and hydroponic applications. Features at-a-glance: IP67 waterproof and floating de...

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Hanna quick calibration solution pH EC bottle, 120 milliliters

$11.99

HI5036-012 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 ...

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Hanna HI98118 GroLine waterproof pH tester

Hanna HI98118 GroLine Waterproof pH Tester, additional product view 2

$99.99

The 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 r...

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Hanna GroLine 1413 conductivity standard bottle, 230 milliliters

$16.50

HI7031-023 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...

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Hanna GroLine storage solution sachets, 20 milliliters, 25 pack

$39.00

HI70300G is a high quality storage solution designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight de...

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Hanna HI98131 GroLine hydroponic pocket pH EC TDS temperature tester

$259.99

The 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, inc...

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$64.00

The 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 ...

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Hanna GroLine general purpose cleaning solution bottle, 120 milliliters

$11.99

HI7061-012 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 th...

pH & EC Control

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