The meters become out of adjustment from the correct measurement with use and it is necessary to regulate the measurement by adjusting the meters to correct values with these solutions. It is recommended to clean the meters after use and calibrate them every month or two months according to the instructions. n its use.
Careful handling and good cleaning (cleaning solution for the electrodes) is essential for a good measurement result.
Calibration of a meter:
Immerse the electrode in the supplied phosphate solution with pH 7 at a temperature of 25 °C and shake it gently. Allow the reading to stabilize. To calibrate it, turn the calibration screw until the reading corresponds to the value of the solution supplied.
Immerse the electrode in the calibration solution marked with pH 4 and follow the same procedure established above until the meter indicates the correct measurement.
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