• GH pH 4.01 Calibration Solution Quart
General Hydroponics

GH pH 4.01 Calibration Solution Quart

General Hydroponics® Meter Calibration Solutions 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 precisely calibrated and yield reliable readings each time they are used.
  • $29.76
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  • - $-29.76
We have 9 in stock.