A device used for dynamic preparation of test gas mixtures by means of controlled
permeation of a gaseous analyte out of a container through polymer material into a
carrier gas stream. These devices containing certain condensable gases
(e.g.
NO2
,
SO2
,
etc.) when operated at closely controlled temperatures can be used as primary standards
calibrated in terms of the
weight loss per unit time.
Source:
PAC, 1990, 62, 2167
(Glossary of atmospheric chemistry terms (Recommendations 1990))
on page 2205
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
