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pH | EC | TDS Meters & Solutions

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$28.39$21.95
($21.95 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 Gallon (4/Cs)
General Hydroponics
GH pH Down Liquid Gallon (4/Cs)
$28.39$21.95
($21.95 Incl. tax)
$11.39$9.95
($9.95 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 Quart (12/Cs)
General Hydroponics
GH pH Down Liquid Quart (12/Cs)
$11.39$9.95
($9.95 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
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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)
$28.39$19.95
($19.95 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$19.95
($19.95 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)
$11.39$9.95
($9.95 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$9.95
($9.95 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)
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