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USE THE TDS METER TO:
Check the performance of your water filter
Check for hardness (1grain=17ppm)
Make sure you always drink pure water!
Hold function: Saves measurements for convenient reading and 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 is 10ppm, indicated by drinking
x10image, Factory calibrated.
Battery: 2x1.5V(Button Cell)