ICS-90 Ion Chromatography System
B-18 Doc. 031851-05 12/04
B.8 Connecting the Waste Lines
Untape the coiled waste and liquid lines from the rear panel. Place the ends of the
three waste lines into a waste container. The waste lines siphon off prime waste
from the pump head, sample overflow from the injection valve, and system waste
from the suppressor.
NOTE To prevent waste from siphoning back into the system,
check the lines periodically to be sure they are not bent,
pinched, or elevated at any point.
A DCR waste backpressure tubing assembly (P/N 060214) is installed
on the free end of the MMS III waste line (see Figure B-16
). The
assembly consists of a coupler and a 6-inch length of 0.25-mm
(0.010-in) ID black tubing.
The tubing assembly provides a small amount of backpressure to
compress any air bubbles formed in the suppressor’s regenerant
chamber. If you shorten or replace the MMS III waste line, remember to
reinstall the backpressure tubing assembly. Failure to do so will result
in high baseline drift.
Figure B-16. DCR Waste Backpressure Tubing Assembly
Suppressor
Waste Line
0.25-mm (0.010-in) ID
Black Tubing
Coupler
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