Metrohm 761 SD Compact IC - Manual (Page 22)

2 Installation
761 SD Compact IC / Instructions for Use 8. 761.1043
14
Capillaries may also be connected together via PEEK inline filters, see
Section 2.3.3.
2.3.3 Filter unit PEEK
Three PEEK filter units 6.2821.120 should be fitted in the 761 SD
Compact IC.
The first one should be fitted between IC pump head 24 and pulsation
dampener 30. It serves to avoid contamination by abrasive particles of
the piston seals.
The two other filter units are installed upstream of the suppressor mod-
ule. One upstream of the inlet capillary 42 (labelled "H2O") in the return
path from the detector to the suppressor in the eluent path (see Section
2.6.6). The other one upstream of the inlet capillary 45 (labelled
"H2SO4"), between peristaltic pump and suppressor module in the re-
generant path (see Section 2.7.2). They serve to protect the suppressor
module against foreign particles and bacterial growth.
For the connection of the filter unit, please note the flow direction ar-
row printed on the housing.
Figure 6: Connecting the filter unit PEEK
50 Pressure screw 6.2744.010
53 Capillary
PEEK capillary 6.1831.010 or PTFE-
microcapillary 6.1803.030
56 Filter unit PEEK 6.2821.120
50 53
56 50 53