Metrohm 844 UV/VIS Compact IC - Manual (Page 51)

2.8 Columns
844 UV/VIS Compact IC / Gebrauchsanweisung 8.844.1051
39
• Prepare aspirating tubing 92: cut a piece of 6.1803.020 PTFE
tubing to the required length (normally approx. 120 cm).
• Pull one end of the aspirating tubing 92 through a PEEK
compression fitting 64 (6.2744.010) so that approx. 30 cm of
the tubing projects.
• Screw PEEK compression fitting 64 with the tubing into one
opening of bottle attachment 108 mounted on the supply
bottle for the regeneration solution and tighten it up so that
the tubing is firmly held.
• Lead the free end of aspirating tubing 92 from above into one
of the openings 2 of the 844 UV/VIS Compact IC and pull it
sufficiently far into the inner compartment.
• Connect aspirating tubing 92 to the inlet end of pump tubing
94 using a compression fitting 64 and a coupling 93.
Figure 20: Connection of reagent
2.8 Columns
2.8.1 Precolumns
The use of easily exchangeable precolumns protects the separating
columns and prolongs their lifetime. The precolumns available from
Metrohm are either real precolumns or precolumn cartridges, which are
used together with a cartridge holder. For the installation of a preco-
lumn cartridge into the accompanying cartridge holder see the attached
leaflet.
The precolumn that is suitable for your separating column can be
found in the Metrohm IC Column Catalog which can be obtained
from your local Metrohm agency, the data sheet accompanying your
separating column, the product information about separating columns
that can be found under http://www.metrohm.com , ion
chromatography products, or let your agency advise you directly.
64 Compression fitting
(6.2744.010)
92 Aspirating tubing for reagent
6.1803.020 PTFE tubing
108 Bottle attachment
(6.1602.150)
109 Supply bottle 6.1608.020
92
64
108
109