3.7.4 Sample
pretreatment
(1) Filter samples without fail if they may contain fine dust.
Dust can clog column and deteriorate it.
(2) Remove foreign matter from samples without fail.
Foreign matter can lower the reliability of data, e.g.
generating abnormal peaks etc.
(a) Example of filtering samples
Dust in sample can be removed easily as follows.
Take sample in Syringe, attach cartridge type
0.45 µm membrane filter, and perform filtering. See
the figure left.
NOTE
:
There are various ways for filtering
sample.
Filtering sample in the way suitable for the sample
amount.
Filtered clean
sample
Filtering by cartridge type
0.45 µm membrane filter.
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