Metrohm 850 Professional IC Anion MCS LP-Gradient - Manual (Page 58)

3.15 Sample degasser
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850 Professional IC – Anion – MCS – LP Gradient
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Figure 25 Pulsation damper – Connection
1 Connection capillary
Connection to the inline filter. 2 Fastening screws
3 PEEK pressure screws, short
6.2744.070 4 Holder for pulsation damper
5 Pulsation damper 6.2620.150 6 Connection capillary
Connection to the injection valve.
3.15 Sample degasser
The sample degasser removes gas bubbles and disolved gases from the
sample. For degassing, the sample flows into a vacuum chamber through
a special fluoropolymer capillary.
Gas bubbles in the sample lead to poor reproducibility, as the quantity of
sample in the sample loop would not always be the same. Samples (con-
taining gas) should therefore be degassed before injection. For this the
sample is sucked through a degasser chamber before injection, whereby
any gas bubbles are automatically removed.
Note
When using the sample degasser, the rinsing time extends by at least 2
minutes.