Metrohm 862 Compact Titrosampler - Manual (Page 62)

5.6 Performing a sample series ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
52 ￭￭￭￭￭￭￭￭ 862 Compact Titrosampler
The sample series continues.
5.6.3 Status of the sample series
The status of the sample series is continuously displayed in the main dia-
log. In addition to the name of the method loaded and the sample data of
the current sample, information concerning the running or the previous
sample series will be displayed on the lowest line. This includes:
￭ The number of samples already processed (including the current sam-
ple)
￭ Total number of samples in the sample series
￭ Number of assigned lines in the sample table (only when sample table
is switched on)
Examples:
Current sample 2 of 5(3)
The second sample in a sample series with a total of 5 samples is currently
being processed. 3 unprocessed samples remain in the sample table.
Current sample 1 from table(10)
The first sample in a sample series which contains all of the samples in the
sample table is currently being processed. 10 unprocessed samples remain
in the sample table.
One can use the key [BACK] to switch back and forth between live dis-
play and main dialog while a sample series is running. This makes it possi-
ble to check the current status of the sample series at any time. If changes
are made in the sample table, then this status bar is updated without
delay in the main dialog.
5.6.4 Special case: Calibrations
The electrodes must be calibrated in advance for a correct SET titration.
This can be accomplished in the same sample series.
￭ Create a calibration method (CAL mode) in which you define the num-
ber of buffer solutions to be processed. Save the method.
￭ Add a line to the sample table which calls up the calibration method. It
should be positioned immediately ahead of the lines with the data for
the samples to be titrated.
￭ Place the required buffer solutions on the rack positions ahead of the
sample solutions on the sample rack.
The calibration method is run first when the sample series is being execu-
ted. The buffer solutions are approached automatically.