User guide

ProLab 1000 Operation

ba75576e05 11/2013

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:

 Accept the new calibration values with <MENU/OK>.

Subsequently, the calibration record is displayed and

downloaded to the interface at the same time.

 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).