pH | ppm | EC | Instruments
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GH pH Test Kit 1 oz
General HydroponicsOriginal price $9.59Original price $9.59 - Original price $9.59Original price $9.59Current price $5.93$5.93 - $5.93Current price $5.93General Hydroponics® pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and obs...
View full detailsOriginal price $9.59Original price $9.59 - Original price $9.59Original price $9.59Current price $5.93$5.93 - $5.93Current price $5.93 -
GH pH 7.01 Calibration Solution 8 oz
General HydroponicsOriginal price $9.03Original price $9.03 - Original price $9.03Original price $9.03Current price $4.31$4.31 - $4.31Current price $4.31General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...
View full detailsOriginal price $9.03Original price $9.03 - Original price $9.03Original price $9.03Current price $4.31$4.31 - $4.31Current price $4.31Out of Stock -
GH pH 4.01 Calibration Solution 8 oz
General HydroponicsOriginal price $9.03Original price $9.03 - Original price $9.03Original price $9.03Current price $4.92$4.92 - $4.92Current price $4.92General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...
View full detailsOriginal price $9.03Original price $9.03 - Original price $9.03Original price $9.03Current price $4.92$4.92 - $4.92Current price $4.92Out of Stock -
GH pH 7.01 Calibration Solution Quart
General HydroponicsOriginal price $25.75Original price $25.75 - Original price $25.75Original price $25.75Current price $13.95$13.95 - $13.95Current price $13.95General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...
View full detailsOriginal price $25.75Original price $25.75 - Original price $25.75Original price $25.75Current price $13.95$13.95 - $13.95Current price $13.95Out of Stock -
GH pH 4.01 Calibration Solution Quart
General HydroponicsOriginal price $25.75Original price $25.75 - Original price $25.75Original price $25.75Current price $13.95$13.95 - $13.95Current price $13.95General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...
View full detailsOriginal price $25.75Original price $25.75 - Original price $25.75Original price $25.75Current price $13.95$13.95 - $13.95Current price $13.95Out of Stock -
GH 1500 PPM Reference Solution 8 oz
General HydroponicsOriginal price $5.99 - Original price $5.99Original price$5.99$5.99 - $5.99Current price $5.99Original price $5.99 - Original price $5.99Original price$5.99$5.99 - $5.99Current price $5.99Out of Stock