Metrohm 889 IC Sample Center - Manual (Page 24)

3.4 Tubing
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
16 ￭￭￭￭￭￭￭￭
889 IC Sample Center
1 2
3
4 5
6 4
2
5
3
1
Figure 7 Connecting pump and column
1 Connection to the syringe module
Port 3 of the injection valve. 2 Connection to the needle
Port 4 of the injection valve.
3 Connection to the high pressure pump
Port 1 of the injection valve. 4 Connection to the separation column
Port 6 of the injection valve.
5 Sample loop
Port 2 and 5 of the injection valve.
3.4 Tubing
The 889 IC Sample Center is equipped with the following standard tubing:
Tubing/Capillary Material/Dimensions
Standard sample needle and
capillary (15 µL) SS (inert-coated): 97 mm x 0.8 mm
OD x 0.25 mm ID
ETFE (Tefzel): 200 mm x 1/16" OD x
0.25 mm ID
Buffer tubing from the high
pressure valve to the syringe
valve (1000 µL) ETFE (Tefzel): 1275 mm x 1/16" OD x
1.0 mm ID
Tubing from the syringe valve
to the washing bottle PTFE: 400 mm x 1/18" OD x 1.6 mm
ID
Tubing from the syringe valve
to the outlet tubing PTFE: 400 mm x 1/8" OD x 1.6 mm ID
Observe the following when mounting new tubing or capillaries:
￭ Do not tighten the connectors excessively. This could block the flow
path.
￭ Make sure that you always use tubing volumes which are suitable for
the other components in the flow path.