With the dist 4, you can determine the conductibilitéélectrique (Total Dissolved Solids) in aqueous media. Control the water clean or measure the water quality of your aquarium. The automatic temperature compensation ensures a high measuring accuracynsions: (L x W x H) 23 x 41 x 175 mmAdditional Technical Data: Resolution: 10 msAccuracy ± 2%Calibration possible according to ISOMeasurement range (conductivity): 19,99 mS µS/cmWeight: 70 gPower supply: 4 x LR44 batteries
needs calibration fluid to calibrate before use