C-600 is a multifunctional water quality tester with 7 functions product that can be used multiple times. It can measure pH, conductivity, ORP, temperature (C/F), TDS and salinity within one meter. the measurement range is and wide, and can measure water salinity and sea salt. It is suitable for digital water quality monitor , swimming pool, drinking water and aquarium. Measurements are accurately displayed in a , easy-to-read and clear LCD.Calibration Conductivity EC: Support 3-point calibration automatic identification (1413us 12.88ms and .8ms) through 3 calibration points (1413uS/cm 12.88mS/CM .8mS/CM) pH: 1 point (6.86) or 2 points (6.86 4.00 )) (6.86 9.18) or 3 points (6.86 4.00 9.18) can automatically identify the calibration solutionSea salt: the salinity of sea water is the ratio of total dissolved solids to the weight of sea salt in sea water, usually expressed in grams per kilogram of sea water. (Measurement range 10.1-200.0 ppt)The power consumption is 2.9 mA, and the power consumption is 0. the accuracy within 150ppt is relatively accurate, and the deviation higher than 160ppt is relatively . Automatic shutdown: 5 minutesEC measurement range: 0 to 10000uS/cm 10.01-19.99ms 20.1-400mS/CMProduct parameters:Product name: 7-in-1 water quality testing penMeasurement range: PH/ORP/EC/TEMP/SALT/S.G/TDSResolution: 1 uS/cm; 0.1 ms/cm;Accuracy: 2% of readingTDS measurement range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0pptResolution: 1ppm; 0.1 pointAccuracy: 2% of readingSalinity measurement range: 0.00 to 25.00%Resolution: 0.01%Accuracy: 0.01-5.00% (0.1%) 5.10-25.00% (1%)PH measurement range: 0.01-14.00pHResolution: 0.01pHAccuracy: 0.05pHORP Negative Potential 1999MVS.G seawater specific gravity 1.000-1.222Operating environment: 0 to 60.0C (32.0-140F); relative humidity 100%TDS coefficient: 0.4 to 1.0Temperature range: 0.1-60.0C 32.0-140FTemperature Accuracy: 0.5CTemperature Resolution: 0.1C/FPower Supply: 3 x 1.5V button batteries (included)Display size: 33 x 24mmDimensions: 183 x 37 x 37mm (7.2 x 1.5 x 1.5 inch)Weight: 160 gramsMaterial: ABScolour: green+whitePackage Contents:1 x Water quality tester1 x english manualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.