11
5) Press the “REC” button and “HOLD” button at the same time.
The display will show the following screen as an example. Now
release.
6) • If the buffer solution is pH 7.0 (± 1 pH), the upper display will
show 7.00 automatically.
• If the buffer solution is pH 4.0 (± 1 pH), the upper display will
show 4.00 automatically.
• If the buffer solution is pH 10.0 (± 1 pH), the upper display
will show 10.00 automatically.
• If the buffer solution value is beyond pH 7.00, pH 4.00,
pH 10.00 (for example 7.01, 4.02, 10.03) then use
“ ” button, “ ” button to adjust the display value to exactly
match the pH buffer solution value.
7) Press the “Enter” button twice to save the calibration data and
finish the calibration procedure.
8) The described procedure can be performed for the following
calibration points:
pH7 calibration
pH4 calibration
pH10 calibration
• Calibration should always start with pH7, followed by pH4 and /
or pH10 calibration.
• Rinse the electrode with distilled water before each calibration
point.
PH CAL.
^, v Enter : Y
23.5 °C
7.00