12
5)
Press
STD
to accept the value of the measured buffer. If successful, the
Standardization Report will show the accepted value along with other data.
The percentage slope is visible after two or more calibration points have
been completed.
6)
Repeat Steps 4 & 5 with additional pH buffers.
6.
pH Standardization (With Custom Buffers)
Buffer Group
pH Values
CUSTOM
Any 2-5 values,
≥
1.0 pH unit apart
1)
Turn meter on, press
MODE
if needed for pH measurement mode.
2)
Rinse the pH and ATC electrodes then submerse in your custom pH buffer –
any pH value can be used.
3)
Press
STD
to enter standardization mode. When stable, use
▲
/
▼
keys
to
adjust the custom pH buffer value.
4)
Press
STD
to accept the value.
5)
Rinse the pH and ATC electrodes then submerse in next custom pH buffer.
Use any pH value that is at least 1.0 pH unit from custom pH standards that
have already been calibrated. Press
CLEAR
to clear existing values – this will
be necessary when repeating a standardization using the same buffer value.
6)
When stable, use
▲
/
▼
keys to adjust the custom pH
buffer value. Previously
accepted values will be visible inside of a beaker icon. Press
STD
to accept
the new value. Percentage slope is visible after two or more values have
been completed.
7)
Repeat Steps 2 thru 4 with additional pH buffers (up to 5 custom buffers) in
any order.
For best results, enter the value of the custom buffer that
corresponds to the measured temperature. For example, pH
10 buffer is actually 10.06 at 20°C, so the value should be
adjusted to 10.06 instead of 10.00 if the temperature is 20°C.
