Metrohm 746 VA Trace Analyzer - Manual (Page 102)

4.2 Lead determination with standard addition
746 VA Trace Analyzer / 747 VA Stand
4-17
2 Entry of the sample volume
Enter the sample volume as follows:
• Use the cursor keys to select the first field below the title Sample
size/S0
.
• Press the space bar to enter the edit mode (this step can be omitted as
the entry of a number switches directly to the edit mode).
• Enter 0.1 mL and confirm this entry with the key.
In addition to the obligatory entry of the sample volume, you can make additional entries
on this dialog page which are then stored in the determination. These are the two lines
Remark 1 and Remark 2 for general comments, the user name User name and
the 3 sample identifications Ident 1,, Ident 2 and Ident 3.
4.2.6 Performing the determination
To perform the lead determination in the prepared sample solution, the following
steps are necessary:
1 Start the determination
• Press the red key.
• The status display in the header of the dialog page "MONITORING"
switches to * BUSY * , the start time of the measurement is entered un-
der Determination and the determination is given a standard name,
also formed from the start time. Further, during the measurement the
measurement window is superimposed which shows the current pro-
gram line being executed and the remaining line time:
Method: TESTPb MONITORING * BUSY *
Title : Pb determination in ion standard solution
Remark 1
Remark 2
Run mode determination Run 1
User name Stand address 1
Auto.samples off 0 of 160 Determination 03201614.dtm
Auto.batch off 0 of * 1997-03-20 16:14:53
Start interval 0.0 h Modified no
Det.storage off 93.7 % free Sample table -
Pos. Ident.1/S1 Ident.2/S2 Ident.3/S3 Method.call Sample size/S0
0.1 mL
Modify
column
Modify
line
Recalc. Check
method
System
window
Error
window
Live
display
During the ongoing determination, you have the following main function keys available:
Immediate abort of the determination
Interruption (continue with <(CONT)> or <(STEP)>)
Truncation of the current instruction (line time set to 0)
Segment: 6 STIR 263 s
VR: 00