HDE Digital pH Meter Tester

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy

Etekcity? PH-009 IA High Quality Digital Pocket Pen Type PH Meter & Digital Tester Hydro New

Oakton EcoTestr pH 2 Waterproof pH Tester, 0.0 to 14.0 pH Range

HM Digital pH/Temperature Meter

BestDealUSA PH-009 IA Pen Type PH Meter & Digital Tester Hydro New

CyberTech PHTester PH-107 Digital pH Meter Tester, With 2 Pack of Calibration Solution Mixture Included.

HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy

General Hydroponics GH1514 Ph Control Kit

Milwaukee Instruments pH600AQ pH Tester With 1 Point Manual Calibration

Hanna Instruments HI 98107 pHep pH Tester, with +/-0.1 Accuracy

Hanna Instruments HI99104 Educational pH Tester, 0.00 to 14.00 pH Measuring Range, +/-0.2 pH Accuracy, 0.01 pH Resolution

Waterproof pH/Temperature Meter

HM Digital TDS-4 Pocket Size TDS Tester Meter Without Digital Thermometer, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy

Digital pH Meter Tester Pen Style 0-14 Hydroponic Aquarium

Digital Pocket PH Water Meter Tester For Aquarium Pool Spa Wine Hydroponics Test

Koolertron 3 in 1 Moisture/Tester PH Light Meter for Hydroponic Plant Flowers Soil

PHion Balance Diagnostic Ph Test Strips, 4.5 - 9.0 ph Range, 90-Count

SUNLEAVES Digital 4-WaY Soil Meter

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