5 Components
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5.7
Filters
Three types of filters are used to protect the gas sampling line:
22.PTFE membrane filter, diameter 25 mm, pore size 0.2 µm
Order code: Cole-Parmer EW-02915-20
23.PTFE membrane filter, diameter 50 mm, pore size 0.45 µm
Order code: Cole-Parmer EW-02915-30
24.PVDF microfibre filter cartridge filter. Filtration efficiency: 93% at 0.01
µm.
Order code: Balston 9922-05-DQ
The PTFE membrane filters are permeable to gases and water vapour and are
impermeable to liquid water and dust particles. The use of the filters protects
the gas detectors and the other pneumatic parts. Please check the status of the
filters before each sampling campaign.
5.8
Fittings
WEST Systems Tube fitting for 6x4 tubes.
The gas sampling line is assembled with 1/8" gas cylindrical or conical thread
fittings. The sealing is guaranteed by Loctite 542 dope.
