Using one meter to measure multiple parameters, such as pH, Ion, Conductivity, Salinity, resistivity, dissolved oxygen etc. Without the need to spend lots of money on purchasing multiple meters, you can find the cost-effective meters for your different applications and use on CLEAN multi-parameter meters. DO, BOD, OUR, SOUR, Conductivity, TDS, Resistivity, Salinity, °C / °F 0 to 400 % / 40.00 mg/l 450 to 825 mmHg 0 - 5.000 µS/cm; 0 - 50.00 µS/cm; 0 - 500.0 µS/cm; 0 - 5000 µS/cm; 0 - 200.00 mS/cm; 0 - 500.0 mS/cm 0 - 5.000 ppm; 0 - 50.00 ppm; 0 - 500.0 ppm; 0 - 5000 ppm; 0 - 200.0ppt; 0 - 500.0 ppt 0 - 200.0 MΩ*cm -10.0 ºC - 110.0 ºC / 14.0 ºF - 230.0 ºF 0.1%, 0.01 mg/L; 1 mmHg 0.001 µS/cm; 0.01 µS/cm; 0.1 µS/cm; 1 µS/cm; 0.01 mS/cm; 0.1 mS/cm 0.001 ppm; 0.01 ppm; 0.1 ppm; 1 ppm; 0.01 ppt; 0.1 ppt 0.1 MΩ*cm 0.1 ºC / 0.1