32
SECTION 3,
continued
8. Enter the pH value of the buffer using the number keys as
described above. Press
ENTER
.
9. When the reading has stabilized, the standard number will
change to
3
. (If measuring in the mV mode, press
ENTER
to
accept the reading and continue.)
10. If desired, repeat steps 7–9 for a third buffer. If not, press
EXIT
and go to the next step.
11. The slope value and the
Store
and
?
icons will appear.
12. To save the calibration and return to the reading mode, press
ENTER
. To exit the calibration without saving it and return to
the reading mode, press
EXIT
. After the calibration is stored,
the meter is immediately ready to begin measuring samples.
See Section 3.4 on page 33 for pH sample measurements.
3.3.3
Reviewing the Calibration
1. From the pH Reading mode, press the
REVIEW
key.
2. The meter will display the time the calibration was stored.
Press the
UP ARROW
and
DOWN ARROW
keys to scroll
through the calibration data shown below.
Note: View mV value by pressing mV.
3. To print the calibration review data, press
while
reviewing the calibration data.
4. To exit Cal Review mode, press
EXIT
.
Information Shown in Calibration Review
Date and time of calibration
Standard 1, pH and temperature of Standard 1
Standard 2, pH and temperature of Standard 2
Standard 3, pH and temperature of Standard 3 (if applicable)
Slope and offset (corrected to 25 °C)
