Apera Instruments EC700 Benchtop Lab pH Conductivity/Temperature Meter

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

Apera Instruments PH800 Benchtop pH Meter w/ 201T-F Attachment

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

Apera PH700 Benchtop Lab pH Meter 0.01 Accuracy with 3-in-1 pH/Temp. Electrode

APERA PC800 ph/mV/Cond/TDS/Sal/Res/Temp Meter

Oakton pH/CON 510 Benchtop Meter pH/mV/Conductivity/TDS/Temp - ph

Apera Series EC60 Cond/TDS/Salinity Waterproof Conductivity Pocket Tester