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4. The display will show mV value while being calibrated.
After the value becomes stable, the display will show the
second pH value of calibration. Then, it will enter the third
calibration (Ct3).
5. Clean the electrode completely, and put it into the second
buffer solution. Then, push bottom to start the
third-point calibration.
6. When being calibrated successfully, it will show “CAL
PASS”. If the calibration is unsuccessful, it will show “CAL
Err”. (See chapter 10 for Error messages and solutions).
7. The display will show OS1 value (zero-point) automatically.
Push to show the SLP1 value of calibration; Push
again to show OS2 value (zero-point); Push again to show
SLP2 value; Push again to repeat the calibration steps as
shown in 8.4.2 or push to go back to measurement mode.
Note: 1. The dual-point and three-point calibration steps of
NTST Buffer are the same procedure as the
calibration of TECH Buffer except the buffer’s
standard.
2. When doing Three-point calibration, be aware of
calibrating it from lowest pH value to highest one,
or vice versa.
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