Xylem ProLab 4000 - Manual (Page 115)

ProLab 4000 Ion concentration
115 ba75646e03 12/2012
6 In the Sample register, enter the values for the sample volume
(Sample volume) and the volume of the ISA/TISAB solution
(ISA/TISAB volume) as necessary.
7 Use [Dosing] to automatically add the adjusted volume of the
ISA/TISAB solution (ISA/TISAB volume).
The [Continue] button appears after the dosing.
or
If the burette control is inactive:
Add the adjusted volume of the ISA/TISAB solution (ISA/TISAB
volume) manually.
8 Thoroughly rinse the electrode with deionized water.
9 Immerse the electrode in the sample.
10 Start the measurement with [Continue].
The measured value is checked for stability (Stability control).
11 Wait for the measurement with stability control to end.
or
Take over the calibration value with [OK].
The Standard register with the calculated measured value
pops up.