Digital TDS Meter Inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. This pocket-size unit is also ideal for home or laboratory hydro-electrical conductivity testing Instructions： 1. Remove the cap from the pen and turn the switch on. 2. Dip the pen into the test solution but not more than 2cm. 3. Stir the pen in the solution, then stay stable and after 2-6 seconds the TDS value will display on the screen. Press the hold button to save the value and then look at it. 4. After using, dry the head the of the pen and put the cap back on. Please note: The body of the TDS pen should not be exposed to liquids, direct sunlight or high temperature. Avoid dropping it. Parameters 1.range: 0-9990ppm 2.accuracy: +/- 2%. 3.battery: 2*1.5v(button cell). 4.Operating Temperature: 0 ~50oC 5.Automatic Temperature Compensation: 0~60oC 6.Size: 154*26*19mm(6.06*1.02*0.75in) 7.Weight: 65g(2.29 oz) 8.Hold function: saves measurements for convenient reading and recording. 9.Auto-off function: turn on meter after 8 minutes of non-use to conserve batteries, and will be locked automatically after 2 minutes. 10.Dual range: measures from 0-999ppm, with a resolution is 10 ppm, indicated by drinking*10 image, factory calibrated. Package contains: 1 x TDS Meter 2 x 1.5V CR1620 Button Cells 1 x TDS Meter PU Case 1 x TDS Meter User Manual
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