K-2500 CHEMETS Visual Test Kit, Free & Total 0.1-2 ppm by CHEMetrics

CLD510 CLD Series 0-10 ppm Chlorine Dioxide 4-20mA Sensor by Sensorex

CLD510-MB CLD Series 0-10 ppm Chlorine Dioxide Modbus RS485 Digital Communication Sensor by Sensorex

CLD502-MB CLD Series 0-2 ppm Chlorine Dioxide Modbus RS485 Digital Communication Sensor by Sensorex

CLD505 CLD Series 0-5 ppm Chlorine Dioxide 4-20mA Sensor by Sensorex

CLD505-MB CLD Series 0-5 ppm Chlorine Dioxide Modbus RS485 Digital Communication Sensor by Sensorex

C-6908 COMPARATOR Nitrate Comparator (Flat) by CHEMetrics

C-6902 COMPARATOR Nitrate Comparator (Round), 0-0.1 ppm by CHEMetrics

CS10-TP-HPSS-25 CS10 Series 2.75" Sensor for 750II Resistivity Monitor/Controller, 0.05 Cell Constant, 25 ft Cable, 1/2in Fitting by Myron L

35661-94 CTS 50 Waterproof Pocket Conductivity/TDS/Salinity Tester without Sensor by Oakton

35634-42 CTSTestr 5 Waterproof Conductivity Pocket Tester by Oakton

35634-65 CTSTestr 50C Cup-Style Waterproof Pocket Conductivity/TDS/Salinity Tester by Oakton

35634-55 CTSTestr 50P Pin-Style Waterproof Pocket Conductivity/TDS/Salinity Tester by Oakton

35640-31 DO 450 Waterproof Meter with Probe and NIST-Traceable Calibration by Oakton

35640-90 DO 450 Waterproof Portable Meter Kit by Oakton

35640-91 DO 450 Waterproof Portable Meter Kit with NIST-Traceable Calibration by Oakton

35415-00 DO 700 Benchtop Dissolved Oxygen Meter Kit by Oakton

35643-14 DO6+ Dissolved Oxygen Meter Kit by Oakton

35643-12 DO6+ Dissolved Oxygen Meter with Probe by Oakton

35411-00 EC 700 Benchtop COND/TDS/SAL/TEMP Meter with Probe and Stand by Oakton

35411-01 EC 700 Benchtop COND/TDS/SAL/TEMP Meter with Probe, Stand and NIST-Traceable Calibration by Oakton

35462-11 EcoTestr CTS1 Pocket Conductivity, Salinity, and TDS Meter by Oakton

35634-06 EcoTestr EC1 Waterproof Conductivity Pocket Tester by Oakton

35423-01 EcoTestr pH 2+ Pocket pH Meter by Oakton