04300910 is referenced by 26 patents and cites 8 patents.

A method of measuring gas, vapor and aerosol components in an air sample, using a gas detecting device, includes a glass tube having openable ends for the flow of test gas therethrough and a filter therein entraining components to be measured, comprises, breaking an ampoule of a liquid solvent for the materials entrained by the filter to cause the solvent to pass through the filter into a granular reaction layer and then through an empty chamber. The testing tube includes a liquid lock which is formed by a hydrophobic paper which is disposed downstream of the empty chamber so as to retain the reacting products in the chamber so they may be viewed. The reactant products undergo a color change in proportion to a substance to be detected, such as sulfuric acid, for example.

Title
Test vial construction and method of measuring gas, vapor and aerosol components in an air sample
Application Number
6/192552
Publication Number
4300910
Application Date
September 30, 1980
Publication Date
November 17, 1981
Inventor
Karl Heinz Pannwitz
Lubeck
DE
Agent
McGlew and Tuttle
Assignee
Dragerwerk Aktiengesellschaft
DE
IPC
G01N 21/78
G01N 31/22
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