TDS Tester Meter with 0-9990 ppm Measurement Range, LCD Digital TDS Meter Tester Water Quality Tester for drinking water, water filter, hydroponics, aquariums, etc High quality: economy model that is ideal for end-users. Highly efficient and accurate due to its advanced microprocessor technology Feature: Easy to use, efficient and precise, +/- 2% Readout Accuracy, 1 ppm Resolution, Temerature: 0-50 , Measurement Range: 0-9990 ppm, Large, easy to read LCD screen, Data-hold function, Automatic shut-off after 10 minutes Pocket Size: TDS meter is a professional water level test instrument, the operation is simple, the appearance of fashion, small size and easy to put in your pocket! For today's market volume is the smallest, lightest portable. Reasonable design, pen electrode can be directly inserted into the water solution, measured it.Compact size that enable you to take anywhere Hold Function: saves measurements for convenient reading and recording. The measurement time is rapid and accurate Widely Use: Ideal for all water quality testing, water purification applications, waste water regulation, aqua culture,hydroponics, laboratory and scientific testing, pools, ecology testing, colloidal silver, water treatment, food and coffee, baths and spas and more