13 sample degasser, Figure 18, Pulsation absorber – connection – Metrohm 881 Compact IC pro – Anion – MCS User Manual
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3 Installation
881 Compact IC pro – Anion – MCS
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1
2
3
3
4
5
6
Figure 18
Pulsation absorber – Connection
1
Connection capillary
Connection to the inline filter.
2
Fastening screws
3
PEEK pressure screws, short
(6.2744.070)
4
Holder for pulsation absorber
5
Pulsation absorber (6.2620.150)
6
Connection capillary
Connection to the injection valve.
3.13
Sample degasser
The sample degasser removes gas bubbles and dissolved 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.