Xylem ProLab 1000 BENCH TOP pH METER - Manual (Page 49)

ProLab 1000 Operation
49 ba75576e04 01/2011
Continuing with three-
point to five-point
calibration
(Buffer NIST/DIN)
12 Wait for the measurement with stability control to be completed
or Terminate stability control with <MENU/OK> and accept the
calibration value.
The calibration display for the next buffer appears.
13 For two-point calibration, select Exit with 2 point calibration with
<
▲><▼> and confirm with <MENU/OK>.
The calibration is completed as a two-point calibration.
The new calibration values are displayed as a message ([
i]).
You have the following options:
z Accept the new calibration values with <MENU/OK>.
Subsequently, the calibration record is displayed and
downloaded to the interface at the same time.
z To switch to the measured value display without accepting
the new calibration values, press <MODE> or <ESC>.
[ i] Buffer value = 9.18
[ i] U = -167.0 mV
[ i] Temperature = 24.8 °C
Terminate stability control
pH <CAL>
[ i] Buffer series NIST/DIN
[ i] Immerse sensor in buffer 3
Exit with 2 point calibration
Continue
pH <CAL>
14 Thoroughly rinse the electrode with distilled water.
15 Immerse the electrode in buffer solution 3.
16 If necessary, measure the temperature of buffer 3 manually,
then enter and confirm it with <
▲><▼> and <MENU/OK> in the
Set temperature setting.
17 Select Continue with <
▲><▼> and press <MENU/OK>. The
buffer is measured.
The measured value is checked for stability (Stability control).