Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Calorimeter
Patent
1988-09-01
1990-11-20
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Calorimeter
422 57, 422 86, 422 88, 427213, 427215, 427220, G01N 2175, G01N 2178, B05D 124
Patent
active
049717626
ABSTRACT:
The invention relates to a detector device for determining components of a sample such as a gaseous sample. The determination is made with reagents which are present in two component quantities separate from each other in the storage condition of the detector device. The component quantities are brought into contact with each other to establish the use condition of the detector device. A simple production and reliable operation of such detector devices is obtained if at least one of the component quantities is contained in a plurality of particles during the storage condition with each particle having a reagent-containing core and an encapsulation surrounding the core. The encapsulation is made of a material which is solid at normal temperature and melts at a higher temperature which is unharmful to the remaining components of the detector device. The detector device is transferred from the storage condition to the use condition by removing the encapsulation by heating. A method for producing the detector device is also disclosed.
REFERENCES:
patent: 4438067 (1984-03-01), Siddiqi
patent: 4588612 (1986-05-01), Perkins et al.
patent: 4765962 (1988-08-01), Heim
Dragerwerk Aktiengesellschaft
Ottesen Walter
Singla Abanti B.
Warden Robert J.
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