Calculated Industries 7440 AccuMASTER XT Digital Moisture Meter | Handheld |Pin Type | Backlit LCD Display | Detects Leaks, Damp and Moisture in Wood, Walls, Ceilings, Carpet and Firewood

Pen Type,All in one pH Meter with Replaceable Electrode & Digital Display for Fish Hatcheries,Food Processing Industries by lutron Model: PH-222

NGW-1pc Industrial pH Meter/Sensor MODBUS-RTU RS485 & 4~20mA Current (S-pH-01A)

Atlas Scientific Wi-Fi Pool Kit (Industrial pH/ORP/Temp Probe)

Industrial Test Systems 486301 Exact® Ph+ Multi Meter Test Kit pH, TDS, Salt, Temp

AERO-GRO Digital 5-in-1 Meter: 5 Functions: pH, TDS, EC, Salinity%, Salinity ppm, and Temp, IP67 Waterproof, Pen-Type Tester for Hydroponics, Water, Wine, Spas, Aquariums

Professional 6-in-1 TDS, TOC, COD, UV275, EC & Temperature Meter, Accurate Reliable Water Analyzer, Digital Water Tester for Drinking Water, Hydroponics, Industrial Water, Aquariums, Tap

6 in 1 Water Quality Testing Meter, Tds Cod TOC Uv275 Ec Temp Meter, Digital Water Tester for Home Drinking Water, Hydroponics, Aquariums, Tap Industrial Water

pH Meter for Water, Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range, Portable pH Test Kit for Household Drinking, Pool, Aquarium, Fish Tank, Batteries Included

WinnerEco Portable Water Electrolyzer Testers Household Water Quality Testers LCD Screen Display for Drinking Water Industry