6 filter unit peek, Filter unit peek, Figure 9 – Metrohm 861 Advanced Compact IC User Manual
Page 29: Connectors for capillaries
2.3 Attaching the accessories
861 Advanced Compact IC / Instructions for Use 8.861.1033
19
These PEEK connectors can also be used to connect 6.1822.010 PTFE
microcapillaries (i.d. = 0.3 mm). Proceed as follows:
Capillaries fitted with new connectors must have a perfectly flat cut
surface. To cut PEEK or PTFE capillaries it is best to use the
6.2621.080 Capillary tubing cutter.
1 Mount compression fitting
•
Slide a compression fitting 54 (6.2744.010) or a compression
fitting 55 (6.2744.070) over the end of the capillary 56 to be
fastened as shown in Figure 9.
2 Insert capillary in connection
•
Push capillary end in the corresponding connection as far as
it will go (to avoid dead volume).
3 Tighten compression fitting
•
Tighten compression fitting 54 or 55 by hand (never use
tools).
Figure 9: Connectors for capillaries
2.3.6
Filter unit PEEK
One 6.2821.120 Filter unit PEEK (see Figure 10) is installed between
the high-pressure pump and injection valve 28. This filter unit serves to
avoid contamination by abrasive particles of the piston seals.
The Filter unit PEEK 34 consists of the filter-housing 59, the filter-screw
57 and the 6.2821.130 Filter 58. For the connection of capillaries 56
PEEK compression fittings 54/55 (6.2744.010 or 6.2744.070) must be
used. New filters 58 are available as an option with the ordering number
6.2821.130 (set of 10).
When connecting the filter unit please note the flow direction arrow
printed on the housing.
54 Compression fitting
55 Compression fitting
(6.2744.070)
6.1831.010 PEEK capillary or
6.1822.010 PTFE microcapillary
54
56
55