Sensors and Testers

High Precision Digital pH Pen with ±0.1 pH Accuracy, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools — pH Meter Kit, pH Pen Tester for Water

pH Meter Kit, pH Pen Tester for Water

$59.99

High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools — pH Meter PRO Kit, Interchangeable Probe

pH Meter PRO Kit, Interchangeable Probe

$79.99

High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, All-in-One Temperature Salinity EC TDS pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools — Hydroponic Meter PRO Kit, All-in-One pH Pen, Interchangeable Probe

Hydroponic Meter PRO Kit, All-in-One pH Pen, Interchangeable Probe

$149.00

Measures Acidity, Alkalinity, and Temperature with ±0.01 pH Accuracy, For Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools — Replacement Probe for pH Meter PRO Kit

Replacement Probe for pH Meter PRO Kit

$29.99

Measures Acidity, Alkalinity, Temperature, EC, TDS, & Salinity with ±0.01 pH Accuracy, For Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools — Replacement Probe for Hydroponic Meter PRO Kit

Replacement Probe for Hydroponic Meter PRO Kit

$59.99