Conductivity meters perform 'in situ' measurements of the environment, swimming pools, spas and agriculture.rrModel CONDT1:r- Conductivity, TDS and temperature measurementsr- Auto Cal in 2 pointsr- With temperature compensation and on-screen indication of calibrated standards.r- LCD screenr- IP67 Tobacconistsr- Includes patterns and manualr- Works with 4 1.5 AA batteriesrrModel CONDT5:r- Measurements of conductivity, TDS, salinity and temperaturer- Auto Cal in 3 pointsr- With temperature compensation and on-screen indication of calibrated standards.r- Color LCD screen according to this in size, calibration or errorr- IP67 Tobacconistsr- Self-diagnosis message, battery level and calibration errorr- Includes patterns and manualr- Works with 4 1.5 AA batteries