TDS Tester Pen Water Quality Tester Water Measurement Tool

Feature: This item can be used in: Water purifiers and filters, pools and spas, aquariums, hydroponics. Hold function: Saves measurements for convenient reading and recording Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries Specification: Color: White Range: 0-9990ppm Accuracy: +/-1.5% Battery: 2*LR44(Not Included) Item size:150mm x 27mm x 15mm Applicatable for: Tap Water, Boiling Water, Bottled Water, Fish Tank Water, Residential Water Station, etc. Package Included: 1 x TDS Tester Detail pictures: