Xylem ProLab 4000 - Manual (Page 117)

ProLab 4000 Ion concentration
117 ba75646e03 12/2012
16 Change the displayed unit of the measured value with [Unit] if
necessary.
17 If required, display the record of the current measurement with
[Record].
18 Start measuring further samples with [Continue].
Repeat steps 5 - 15 for all samples.
or
Terminate the measuring method with [Cancel] and confirm the
safety query with [OK].
Measurement with the selected method is completed.