Xylem ProLab 4000 MULTIPARAMETER BENCHTOP METER - Manual (Page 85)

ProLab 4000 pH
85 ba75646e02 01/2010
Continuing with two-
point calibration
8 Using [OK], confirm the Finish with 1-point calibration infotext
and take over the new calibration values.
The calibration record is displayed and output to the interface.
The calibration procedure is finished.
or
Continue the calibration with [Continue].
or
Cancel the calibration procedure without taking over the cali-
bration values with [Cancel], or <ESC>.
Note
For single-point calibration, the meter uses the Nernst slope (-
59.16 mV/pH at 25 °C) and determines the zero point of the electrode.
9 When measuring without temperature sensor:
z Measure the temperature of the standard solution using a
thermometer.
z Open the setting window for the temperature value with
[Man. temp.].
z Enter the temperature and confirm with [OK].
10 Thoroughly rinse the electrode with distilled water.
11 Immerse the electrode in buffer solution 2.
12 Start the measurement with [Continue].
The measured value is checked for stability (Stability control).
13 Wait for the measurement with stability control to end.
or
Terminate the stability control with [OK].
The pHX calibration window for the according to buffer solution
pops up and the Finish with 2-point calibration infotext is dis-
played.
14 Using [OK], confirm the Finish with 2-point calibration infotext
and take over the new calibration values.
The calibration record is displayed and output to the interface.
The calibration procedure is finished.
or
Continue the calibration with [Continue].
or
Cancel the calibration procedure without taking over the cali-
bration values with [Cancel], or <ESC>.