USE THE TDS METER TO: *Check the performance of your water filter*Check for hardness(1 grain=17ppm)*Make sure you always drink pure water!Features: Hold function:Saves measurements for convenient reading the recording.Auto-off function:Turns off meter after 10 minutes of non-use to conserve batteries.Dual Range:Measures from 0-999ppm, with a resolution of 1ppm. From 1,000 to 9,990ppm,the resolution is 10ppm,indicated by a blinking x 10 image. Range:0-9,990ppmAccuracy:2%Battery: 2x1.5 V (Button Cell)Size: 14.2 x2.5 x1.5cm

Weight:36g(1.27oz)Auto shut-off

Data hold

Auto  Temperature compenstion

1000+ hours of continuous Usage

TDS Water Tester