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How do I avoid water saturation when carrying out large-volume sampling of humid air?

To avoid water saturation of your analytical system, the simplest solution is to use only hydrophobic sorbents in your sampling tubes, such as Carbograph 2TD, which typically retains less than 1 mg on a standard tube and has a retention volume that is barely affected by the presence of water. Application Note 005 contains more information on the range of sorbents offered by Markes.

However, in some cases the use of strong, less hydrophobic, sorbents is unavoidable due to the nature of the compounds being studied. Application Note 026 gives more detail on the method parameters that can be used to manage high levels of water within samples and still get reliable results.

UK
UK
Markes International Ltd
Gwaun Elai Medi-Science Campus
Llantrisant
RCT, CF72 8XL
UK
Tel: +44 (0)1443 230935
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Germany
Markes International GmbH
Bieberer Straße 1-7
63065 Offenbach am Main
Germany
 
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USA
Markes International, Inc.
2355 Gold Meadow Way
Gold River, Sacramento
California 95670
USA
Tel: +1 866-483-5684 (toll-free)
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China
Markes Instruments (Shanghai) Co., Ltd
No. 1 Building, No. 7 Guiqing Road
Xuhui District
Shanghai 200233
P.R. China
Tel: +86 21 5465 1216
Part of Schauenburg International
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