wtw pH 3310 - Page 41

pH 3310 Operation
41
ba75802e02 12/2008
Note
For single-point calibration, the instrument uses the Nernst slope
(-59.16 mV/pH at 25 °C) and determines the zero point of the
electrode.
Continuing with two-
point calibration
(Buffer: TEC)
6 Wait for the end of the measurement with stability control or
accept the calibration value with <ENTER>.
The calibration display for the next buffer appears.
7 If necessary, terminate the calibration as a single-point
calibration with <M>.
The calibration record is displayed.
pH
181.3 mV
24.8 °C
AutoCal
4.010
22.09.2008
08:00
AR
TEC
pH 2
181.3 mV
24.8 °C
AutoCal
22.09.2008
08:00
TEC
8 Thoroughly rinse the combination electrode with distilled water.
9 Immerse the electrode in buffer solution 2.
10 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <▲><▼>.
11 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).