3 in 1 TDS EC and Temperature Meter
1. The calibration powder with 250ml of distilled water or pure water. Dip the pH electrode into a mixed phosphate standard buffer at pH 6.86 and shake gently.
2. Push the CAL button, it will auto calibration until the displayed value and the standard buffer solution at pH 6.86 consistent with the ambient temperature.
Noted:
1.The same as above, the electrode was inserted into pH4.00/9.18 buffer solution.
2. Do not use tap water and mineral water, it cannot be used to configure the calibration solution.
3. Each package needs to prepare 250ML of purified water or distilled water.