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

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

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

General Hydroponics GH1514 Ph Control Kit

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

Luster Leaf 1612 Rapitest pH Soil Tester

Phinex Diagnostic Ph Test Strips, 80ct -2 pack (160 strips) Results in 15 Seconds Balance Your pH today

Milwaukee Instruments pH600AQ pH Tester With 1 Point Manual Calibration

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

HDE Digital pH Meter Tester

HM Digital pH/Temperature Meter

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

SUNLEAVES Digital 4-WaY Soil Meter

BestDealUSA 3in1 Plant Flowers Soil Tester Moisture Light PH Meter

2 Packs PH 1-14 Test Paper Litmus Strips Tester, 80pcs Per Pack

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

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

Luster Leaf 1817 Rapitest Mini Soil pH/Moisture Tester

API Freshwater PH Test Kit

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