Portable Multi-Parameter Meter Kit (pH/Conductivity/TDS/Temp.)

Apera Instruments PC 823-B Portable pH/EC/TDS/Temp Meter

Apera Instruments WS200 Fluoride/pH/Conductivity 7-in-1 Portable Meter Kit

Thermo Scientific Orion Star A329 Portable pH/ISE/Conductivity Meter

APERA Instruments SX721 pH/ORP/Conductivity/TDS ++ Portable Meter Kit

Apera Instruments Value Series PH850-WW Portable pH Meter Kit Wastewater AI5531

Apera Instruments AI311 Premium Series PH60 & Blue Lab Truncheon

Hach Sension1 Portable Conductivity pH Meter Water Quality Tester With Probe