04428907 is referenced by 20 patents and cites 7 patents.

The invention provides a detector for detecting air components, e.g. contaminations, and in particular noxious or poisonous contaminations, which device comprises a housing in which an air pervious carrier containing a first reagent is arranged, this detector being adapted to draw air to be tested through said carrier so as to expose this reagent to the air, this reagent being influenced by the components to be detected, which carrier is to be contacted with a second reagent which, together with the first one, can bring about a color reaction depending on the fact whether the first reagent has been influenced or not. The housing forms, in the operative condition, an integral unit, an air- and liquid-tight container with a rupturable wall and containing a not contaminated liquid contributing to said color reaction being arranged within said housing, the latter being, furthermore, provided with a yieldable wall portion and a plurality of piercing pins arranged in such a mutual spatial relationship that the container can be pierced by pressing inwards said wall portion, so as to moisten said reagent carrier with the liquid from said container. In particular the second reagent can be contained in a similar second carrier which is normally eparated from the first one but is contacted therewith when pressing inwards said wall portion.

Title
Detector for detecting air components
Application Number
6/237492
Publication Number
4428907
Application Date
February 23, 1981
Publication Date
January 31, 1984
Inventor
Henri F Klaij
Enschede
NL
Hubertus E Hilbrink
Apeldoorn
NL
Berend Heijenga
Sleen
NL
Agent
Beehler Pavitt Siegemund Jagger & Martella
Assignee
Nederlandse Centrale Organizatie voor Toegepast Natuurwetenschappelijk Onderzoek
NL
IPC
G01N 31/22
G01N 31/06
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