wtw Avantor VWR pH 1100 L Operating Manual page 42

Operation
Continuing with two-
point calibration
42
pH
7.000
24.8 °C
AnyCal
15.03.2014
08:00
8 Set the nominal buffer value for the measured temperature with
< >< >
 
.
9 Accept the calibration value with
The calibration display for the next buffer appears (voltage dis-
play).
10 If necessary, finish the calibration procedure as a single-point
calibration with
The calibration record is displayed.
Note
For single-point calibration, the instrument uses the Nernst slope
(-59.2 mV/pH at 25 °C) and determines the zero point of the electrode.
11 Thoroughly rinse the electrode with deionized water.
12 Immerse the electrode in buffer solution 2.
13 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
< ><
 
with
14 Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parame-
ter flashes.
15 Wait for the measurement with stability control to be completed
or terminate the stability control and take over the calibration
<OK>
value with
1
Buffer
<OK>
<MODE>
.
>
.
<OK>
.
pH 1100 L
.
.
ba77068d05 05/2021