Calibrating a Meter:
1. Immerse the electrode in the phosphate solution supplied 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 supplied solution.
2. Immerse the electrode in the pH4 labeled calibration solution and follow the same procedure set out above until the meter indicates the correct measurement.
Calibration Specifications:
-Ph 4 calibrating liquid for pH meters