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15% Off Applied at Checkout *Excludes Clearance, Sale Items, and Substrates.
15% Off Applied at Checkout *Excludes Clearance, Sale Items. and Substrates.

GH 1500 PPM Reference Solution Quart

$21.49
SKU
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.