Xylem HandyLab 100 - Manual (Page 38)

Operation HandyLab 100
38 ba77062d01 03/2014
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.
Continuing with two-
point calibration
6 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parame-
ter flashes.
7 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 (voltage dis-
play).
8 If necessary, finish the calibration procedure as a single-point
calibration with <M>.
The calibration record is displayed.
pH
-180.0
24.8 °C
AutoCal TEC
10.011
15.03.2014
010:00
AR
Buffer
mV
9 Thoroughly rinse the electrode with deionized water.
10 Immerse the electrode in buffer solution 2.
11 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <
><>.
12 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parame-
ter flashes.