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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
calibration mode.
5. 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).
6. The display will automatically show the oS1 (zero-point
mV) Value. Push bottom to see SLP1 (slope) value.
Push again to repeat the calibration steps as shown in
8.4.1 or push to back to the measurement mode.
Note: 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.
8.4.2Three-point calibration (for PC-3100RS only)
:
1. Enter Ct1 calibration mode. Clean the electrode completely.
Put it into the first buffer solution. Then, push bottom to start
the first-point calibration.
2. The display will show mV value while being calibrated.
After the value becomes stable, the display will show the first
pH value of calibration. Then, it will enter the second
calibration (Ct2).
3. Clean the electrode completely, and put it into the second
buffer solution. Then, push bottom to start the second-point
calibration.