2. SimPure
  3. TDS Meter Digital Water Tester, TDS Meter, EC Meter & Temperature Meter 3 in 1,

SimPure TDS Meter Digital Water Tester, TDS Meter, EC Meter & Temperature Meter 3 in 1, User guide

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How to Calibrate TDS Meter
1. Put the TDS meter into the calibration solution(342
ppm calibration solution), press the ON/OFF
button to turn it on - press and hold the SHIFT button for
3 seconds.
2. The temperature number displayed on the LCD
becomes the CALL word - release the hand, tap
the SHIFT button and the value will increase (tap the
HOLD button value reduced)--When the
required value is reached; press the SHIFT button for 3
seconds - the CALL word on the LCD
becomes the temperature display, release it. The
calibration is complete
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