EXTECH MO50 Dual Moisture Meter Combination Pin & Pinless / open box

Hach Sension 156 Combination PH Conductivity Multimeter

New Extech Instruments Replacement EC 505 pH-EC/TDS Electrode

5 in 1 Water Quality Tester for Conductivity Salinity PH Temperature Measurement

Extech RF40 Battery Coolant/Glycol Refractometer with Case

Extech HT30 WBGT Heat Stress Meter Temp humidity guage

EC505 Exstik Replacement Ph Electrode/Conductivity Cell Module for EC500

Extech CT70 AC Circuit Load Tester Electrical Test Meter