Sensors Meters and Data Recorders 4 - 20 mA Water Quality Sensors 4 - 20 mA Water Quality Sensors Smart Sensors With Data Logging Multiparameter Water Quality Sondes Continuous Online Water Quality Monitoring Pocket Water Testers LAB & FIELD INSTRUMENTS pHionics 4 - 20 mA pH Water Quality Sensors STs Series from $53.00 Select Configuration Model 1014 pH Sensor W/ 316 Stainless and 25ft Cable Model 1014 pH Sensor W/ Titanium Body and 25ft Cable Custom Cable Length $50 + $3 Per Ft/Cable Add To Cart pHionics STs Series ORP (Redox) Sensor from $1,111.00 Select Configuration -1000 to 0 mV ORP (Redox) Sensor (Stainless Steel, 25ft Cable) Model 2001 +0 to 1000 mV ORP (Redox) Sensor (Stainless Steel, 25ft Cable) Model 2100 -1000 to +1000 ORP (Redox) Sensor (Stainless Steel, 25ft Cable) Model 2101 -500 to +500 ORP (Redox Sensor (Stainless Steel, 25ft Cable) Model 2505 ORO/Redox Sensor W/ Titanium Housing for Harsh Chemical Conditions (25ft Cable) Custom Cable Length $3 per foot + $50 per sensor Add To Cart pHionics STs Series Conductivity Sensor from $53.00 Select Configuration 0-500 µS/cm Conductivity Sensor Model 4502 (316 Stainless Steel W/25ft Cable) 0-1000 µS/cm Conductivity Sensor Model 4103 (316 Stainless Steel W/25ft Cable) 0-5K µS/cm Conductivity Sensor Model 4503 (316 Stainless Steel W/25ft Cable) 0-10K µS/cm Conductivity Sensor Model 4104 (316 Stainless Steel W/25ft Cable) 0-50K µS/cm Conductivity Sensor Model 4504 (316 Stainless Steel W/25ft Cable) 0-100K µS/cm Conductivity Sensor Model 4105 (316 Stainless Steel W/25ft Cable) Custom Cable Configuration $3 Per Foot + $50 Per Sensor Conductivity Sensor W/ Titanium Housing and 25ft Cable (Any range as the stainless steel version) Add To Cart WQ-FDO Optical Dissolved Oxygen Sensor $1,948.00 Select Cable Length WQ-FDO Dissolved Oxygen Sensor W/25ft Cable WQ-FDO Dissolved Oxygen Sensor W/50ft Cable Add To Cart WQ401 Dissolved Oxygen Sensor from $1,171.00 Available for Backorder Select Configuration WQ401 Dissolved Oxygen Sensor (25ft Cable) WQ401 Dissolved Oxygen Sensor (50ft Cable) WQ401 Dissolved Oxygen Sensor (75ft Cable) WQ401 Dissolved Oxygen Sensor (100ftCable) WQ401-O Online Dissolved Oxygen Sensor (25ft Cable) Add To Cart WQ600 ORP (Redox) Sensor from $879.00 Available for Backorder Select Configuration WQ600 Redox/ORP Sensor, 50ft (15m) Cable WQ600-O Online Version (REDOX, ORP) Sensor, 50ft (15m) Cable WQ600-O Online Version (REDOX, ORP) Sensor, 25ft, Cable WQ600 REDOX, ORP Sensor 25ft, Cable Add To Cart WQ201 Submersible pH Sensor from $202.00 Available for Backorder Select Configuration WQ201 pH Sensor With 50ft Cable (15M) WQ201 pH Sensor With 25ft Cable WQ201-O Online pH Sensor, 50ft (15m) Cable and 1 inch NPT thread WQ201-O Online pH Sensor, 25ft Cable and 1 inch NPT thread WQ201, pH Electrode replacement Add To Cart WQ Submersible Conductivity Sensor from $1,249.00 Available for Backorder Select Call Conductivity Sensor, 0-200uS (25ft Cable) Conductivity Sensor 0-2000, 30m (100ft) Cable SDI-12 & 4-20mA Add To Cart WQ101 Air or Water Temperature Sensor from $761.00 Select Item WQ101 Temperature Sensor (Water or Ambient) W/25ft Cable WQ101 Temperature Sensor (Water or Ambient) W/50ft Cable WQ101 Temperature Sensor (Water or Ambient) W/75ft Cable WQ101 Temperature Sensor (Water or Ambient) W/100ft Cable WQ101-O Online Temperature Sensor, 25ft Cable WQ101-O Online Temperature Sensor, 50ft (15m) Cable Add To Cart WQ730 Turbidity Sensor (Discontinued) from $31.00 Available for Backorder Select Sensor & Cable Length WQ730 Turbidity Sensor W/ 25ft Cable PN 400699-25 WQ730 Turbidity Sensor W50ft Cable PN 400699-50 WQ730 Turbidity Sensor W/75ft Cable PN 400699-75 WQ730 Turbidity Sensor W/100ft Cable PN 400699-100 WQ730 Turbidity Sensor W125ft Cable PN 400699-125 WQ730 Turbidity Sensor W150ft Cable PN 400699-150 WQ730 Turbidity Sensor W200ft Cable PN 400699-200 Turbidity Standard 0.0 NTU, 1 L (PN 02-009) Turbidity Standard 50 NTU 1 L (PN 02-004) Turbidity Standard 100 NTU 1 L (PN 02-005) Turbidity Standard 1000 NTU 1 L (PN 02-006) Add To Cart