Arrangement for colorimetrically detecting a gaseous and/or vapo

Details Arrangement for colorimetrically detecting a gaseous and/or vapo Arrangement for colorimetrically detecting a gaseous and/or vapo

1994-02-10

1995-11-07

Alexander, Lyle A.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

422 58, 422 61, 422 8205, 436 44, G01N 3088

Patent

active

054645883

ABSTRACT:
One or more reaction zones, formed as channels into a carrier, are each lined with a color indicator. This carrier is improved so that the reaction zones can be coated with the required indicators with uniform coating thickness. The coating can be individually changed and can be easily provided. The above is achieved with a carrier which is subdivided into an upper part and a lower part and a sandwich-like composite foil is held between these parts. A reagent carrier foil of the composite foil is provided with the reaction zones and is covered with a channel foil which delimits the reaction zones to have a channel-like shape. An especially advantageous configuration for the reaction zones is provided by an aperture matrix in which carrier spherules are accommodated. The carrier spherules are impregnated with the indicator.

REFERENCES:
patent: 4235097 (1980-11-01), Kring et al.
patent: 4913881 (1990-04-01), Evers
patent: 4933144 (1990-06-01), Moy

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