Skip to content
15% Off Applied at Checkout *Excludes Clearance and Sale Items
15% Off Applied at Checkout *Excludes Clearance and Sale Items

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.