wtw VWR MU 6100 H Operating Manual page 30

pH value
Continuing with two-
point calibration
30
pH
-180.0
AutoCal TEC
15.02.2014
5. Thoroughly rinse the electrode with deionized water.
6. Immerse the electrode in the first buffer solution.
7. When measuring without temperature sensor:
– Temper the buffer solution, or measure the current temperature.
– Enter the temperature value in the menu.
8. Start the measurement with
The measured value is checked for stability (stability control). The [AR]
status indicator is displayed. A progress bar is displayed and the display
of the measured parameter flashes.
pH
-180.0
AutoCal TEC
AR
15.02.2014
9. Wait for the end of the measurement with stability control or accept the
calibration value with
The calibration display for the next buffer appears (voltage display).
10. If necessary, finish the calibration procedure as a single-point calibration
<MODE>
with .
The calibration record is displayed.
For single-point calibration, the instrument uses the Nernst slope
(-59.2 mV/pH at 25 °C) and determines the zero point of the elec-
trode.
11. Thoroughly rinse the electrode with deionized water.
12. Immerse the electrode in the second buffer solution.
1
Buffer
mV
24.8
°C
14:15
<OK>
.
10.011
Buffer
mV
24.8
°C
14:15
<OK>
.
MU 6100 H
ba77077e06 05/2021