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pH | EC | TDS Meters & Solutions

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General Hydroponics
$18.19$16.95
($16.95 Incl. tax)
General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial. Read more
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General Hydroponics GH pH Control Kit (12/Cs)
General Hydroponics
GH pH Control Kit (12/Cs)
$18.19$16.95
($16.95 Incl. tax)
$11.39$7.75
($7.75 Incl. tax)
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level. Read more
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General Hydroponics GH pH Down Liquid Quart (12/Cs)
General Hydroponics
GH pH Down Liquid Quart (12/Cs)
$11.39$7.75
($7.75 Incl. tax)
$3.25
($3.25 Incl. tax)
Botanicare
Botanicare pH Up Quart (12/Cs)
$3.25
($3.25 Incl. tax)
General Hydroponics
$7.54$5.50
($5.50 Incl. tax)
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level. Read more
sale
General Hydroponics GH pH Down 8 oz (12/Cs)
General Hydroponics
GH pH Down 8 oz (12/Cs)
$7.54$5.50
($5.50 Incl. tax)
$22.69$15.50
($15.50 Incl. tax)
General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are p Read more
sale
General Hydroponics GH pH 7.01 Calibration Solution Quart (12/Cs)
General Hydroponics
GH pH 7.01 Calibration Solution Quart (12/Cs)
$22.69$15.50
($15.50 Incl. tax)
$7.96$5.50
($5.50 Incl. tax)
General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are p Read more
sale
General Hydroponics GH pH 4.01 Calibration Solution 8 oz (12/Cs)
General Hydroponics
GH pH 4.01 Calibration Solution 8 oz (12/Cs)
$7.96$5.50
($5.50 Incl. tax)
Hanna Instruments
$105.75$84.60
($84.60 Incl. tax)
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Hanna Instruments DiST 5 EC/TDS Meter
Hanna Instruments
DiST 5 EC/TDS Meter
$105.75$84.60
($84.60 Incl. tax)
$28.39$19.50
($19.50 Incl. tax)
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level. Read more
sale
General Hydroponics GH pH Down Liquid Gallon (4/Cs)
General Hydroponics
GH pH Down Liquid Gallon (4/Cs)
$28.39$19.50
($19.50 Incl. tax)
$22.69$15.50
($15.50 Incl. tax)
General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are p Read more
sale
General Hydroponics GH pH 4.01 Calibration Solution Quart (12/Cs)
General Hydroponics
GH pH 4.01 Calibration Solution Quart (12/Cs)
$22.69$15.50
($15.50 Incl. tax)
$12.00
($12.00 Incl. tax)
The perfect solution to store and hydrate your Bluelab pH probes or pens. <br><br> Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab® pH Probes and Pens. It is designed to increase response time and maximize the life of Bluel Read more
$28.39$19.50
($19.50 Incl. tax)
This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level. Read more
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General Hydroponics GH pH Up Liquid Gallon (4/Cs)
General Hydroponics
GH pH Up Liquid Gallon (4/Cs)
$28.39$19.50
($19.50 Incl. tax)
$11.39$7.75
($7.75 Incl. tax)
This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level. Read more
sale
General Hydroponics GH pH Up Liquid Quart (12/Cs)
General Hydroponics
GH pH Up Liquid Quart (12/Cs)
$11.39$7.75
($7.75 Incl. tax)
$112.50$85.00
($85.00 Incl. tax)
Measures pH and temperature. Selectable units for °C and °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration indicator. Hold reading function and low battery warning. Fully waterproof with auto off function. Automatic Read more
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BlueLab Bluelab pH Pen
BlueLab
Bluelab pH Pen
$112.50$85.00
($85.00 Incl. tax)
Hanna Instruments
$9.50$7.60
($7.60 Incl. tax)
sale
Hanna Instruments 1500PPM TDS Sol 16oz
Hanna Instruments
1500PPM TDS Sol 16oz
$9.50$7.60
($7.60 Incl. tax)
$7.96$5.50
($5.50 Incl. tax)
General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are p Read more
sale
General Hydroponics GH pH 7.01 Calibration Solution 8 oz (12/Cs)
General Hydroponics
GH pH 7.01 Calibration Solution 8 oz (12/Cs)
$7.96$5.50
($5.50 Incl. tax)
$349.00$262.50
($262.50 Incl. tax)
The Bluelab® Combo Meter Plus is an all-in-one, convenient portable solution for accurate measurement of pH, conductivity and temperature in nutrient solution. The battery-powered, lightweight unit can be used anywhere, anytime to measure critical paramet Read more
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BlueLab Bluelab Combo Plus Meter - Probe Included
BlueLab
Bluelab Combo Plus Meter - Probe Included
$349.00$262.50
($262.50 Incl. tax)
$9.50$7.60
($7.60 Incl. tax)
sale
Hanna Instruments PH7 Calibration Solution, 16 oz
Hanna Instruments
PH7 Calibration Solution, 16 oz
$9.50$7.60
($7.60 Incl. tax)
$9.50$7.60
($7.60 Incl. tax)
sale
Hanna Instruments PH4 Calibration Solution, 16 oz
Hanna Instruments
PH4 Calibration Solution, 16 oz
$9.50$7.60
($7.60 Incl. tax)
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