Metrohm 833 IC Liquid Handling Unit - Manual (Page 50)

6 833 IC Liquid Handling Sample Preparation Unit
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
42
Neutralisation.smt
1. Program input for the 766 IC Sample Processor:
001 Ctrl INIT 819
002 Move sample
003 Lift work
004 Ctrl FILL B / STEP 1
005 Pump 120 s
006 Ctrl FILL A 1
007 Ctrl INJECT B1
008 Wait 60 s
009 Ctrl ZERO
1
010 Ctrl INJECT A1
011 Ctrl STEP MSM 833
− Initializes remote lines at 819
− Moves needle to sample position
− Moves lift with needle to working position
− Switches injection valve B at 820 to "Fill"
− Transfers sample to first sample loop
− Switches injection valve A at 820 to "Fill"
− Switches injection valve B at 820 to "Inject"
− Transfers sample via sample preparation module to
enrichment column (*)
− Triggers autozero at 819 IC Detector
− Switches injection valve A at 820 to "Inject"
− Switches sample preparation module to next position
(*) The time for transferring the sample via the sample preparation module must
be adequate, but should be kept as short as possible in order to minimize
contamination of the downstream enrichment column with unwanted anions
from the water used. This is also the reason why the blank value of this water
should be measured regularly for calibration purposes.
Start-Neutralisation.smt
2. Save the system “Neutralisation.smt” under a new name “Start-
Neutralisation.smt”.
3. Remove the data recorder by clicking on the recorder icon with the
right-hand mouse key and then selecting “Unlink”.
4. Change the program for 'Start-Neutralisation.smt' as follows and
save it again:
001 Ctrl INIT 819
002 Ctrl PUMP 833 on
003 Wait 300 s
004 Ctrl STEP MSM 833
005 Wait 300 s
006 Ctrl STEP MSM 833
007 Wait 300 s
− Initializes remote lines at 819
− Switches on 833 Pump Unit 833
− Rinsing time
− Switches sample preparation module to next position
− Rinsing time
− Switches sample preparation module to next position
− Rinsing time
End-Neutralisation.smt
5. Save the system “Start-Neutralisation.smt” under a new name “End-
Neutralisation.smt”.
6. Change the program for “End-Neutralisation.smt” as follows and
save it again:
001 Ctrl INIT 819
002 Ctrl PUMP 833 off
− Initializes remote lines at 819
− Switches off 833 Pump Unit 833