Metrohm 833 IC Liquid Handling Unit - Manual (Page 53)

6.2 Connection to modular IC system for cation separation
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
45
The components are connected as shown below; this also shows the
sample flow scheme:
The inlet and outlet capillaries mounted on the sample preparation
module are connected as follows:
1 Insert sample preparation module
• Place sample preparation module 33 inside the chamber on
the floor.
2 Connect sample preparation module
• Remove plastic stoppers from the rear panel openings 18 of
the 820 IC Separation Center and lead cable 35 mounted on
sample preparation module 33 back through this opening.
• Connect cable 35 to connection 13 “Module” of the 833 IC
Liquid Handling Unit (see Fig. 2).
3 Connect sample feed to sample preparation
module (Sample Preparation connection 1)
• Connect inlet capillary 36 (marked with “Sample in”) at
sample preparation module connection 34 (see Fig. 13) to
the 766 Autosampler using the 6.1831.060 PEEK capillary,
two 6.2744.010 compression fittings and a 6.2744.040 PEEK
coupling.
A) Cations of the sample
are continuously
exchanged for H
+ ions
in the ssample
preparation module;
sample loop at valve A
is filled.
Sample
Sample
Column
Column
B) Sample is neutralized
in sample preparation
module; anions are
enriched at valve A.
Fill
A
SP
Module
A
MSM
Inject
A
SP
Module
A
MSM
Regenerant Eluent H
2
O
Regenerant Eluent H
2
O Regenerant H
2
O
Regenerant H
2
O
833
SP
818
833
Pump
833
SP
818
833
Pump