$960

MARS Utility Service Analyzer. 7 31 4a

$125

Corning 441 Conductivity Meter Tested

$145

Handheld Conductivity Tester with Range (0～1999)μs/cm (2.00～199.9)ms/cm in Water

$229

Hanna HI2222 Calibration Check pH/ORP Benchtop Meter Working Unit Only

$182.55

Digital Display Conductivity Meter Laboratory Cond Tester Water Quality Analyzer

$25607.26

TA Instruments Thermal Conductivity Tester and Polyscience Chiller + software

$175

FISHER SCIENTIFIC AB15 ACCUMET BASIC PH METER W/ ARM/PSU & 13-620-631 ELECTRODE

$2.81

Portable TDS Meter Test Water Quality Test Pen LCD Display TDS Tester 0-9990ppm

$16.56

Digital PH/TDS/EC/Temp Meter Water Quality Monitor Tester 4-in-1 pH Tester

$40

Vintage Photovolt pH Meter Model No 212

$600

Mettler Toledo S230 SevenCompact Conductivity Meter

$495

YSI 600R-BCR-C-T-PH/ORP-DO Multiparameter Water Quality Monitor