DiSt 3: Water conditioning (softener, demineralisation, aquariums, pollution control),DiSt 4: Agriculture, horticulture, hydroponics, cooling towers, boiling and steam heating plants, water purification,Pure H₂O: Pure water, distilled and de-ionised water, steam cleaning, PCB washing, battery checking

High accuracy, fast response, easy to read display and long battery life
Single point calibration and auto temperature compensation for reliable readings
Operating temperature range: 0 to 50°C (stock nos. 218-992 and 219-002); 10 to 40°C (stock no. 219-428)

Calibrate using the Conductivity Solutions (DiSt 3 stock no. 766-902 , DiSt 4 stock no. 766-918 and Pure H₂O stock no. 766-895)