Metrohm 920 Absorber Module - Manual (Page 42)

4.3 Dosino for ultrapure water
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920 Absorber Module
Connect
capillary/tub-
ing at port
… … to
3 T connection (see Chapter 4.4.4, page 47)
4 Combustion oven inlet (see Chapter 4.10.1, page 74)
4.3.5 Connecting the Metrosep I Trap 1
The Metrosep I Trap 1 – 100/4.0 trap column (6.1014.200) removes dis-
ruptive interfering anions and cations from the ultrapure water used for
transferring the absorption solution from the absorber tube to the 6-port
valve. The use of trap column ensures that the analysis is not distorted by
unwanted contamination.
The Metrosep I Trap 1 – 100/4.0 is used between the Dosino for ultrapure
water and the 6-port valve.
The … … is connected to
Inlet Dosino for ultrapure water
Outlet 6-port valve
Accessories The following accessories have to be connected to the trap column:
On … Install this accessory
Inlet
￭ 30 cm of the PTFE capillary (6.1803.030) (8- 16 )
￭ Pressure screw (6.2744.010)
Outlet
￭ 40 cm of the PTFE capillary (6.1803.030) (8- 17 )
￭ Pressure screw (6.2744.010)
Connecting the Metrosep I Trap 1 – 100/4.0
NOTE
The trap column is sealed with threaded stoppers at both ends.
Remove these threaded stoppers before connecting the capillaries.