Colorimetric gas dosimeter

Details Colorimetric gas dosimeter Colorimetric gas dosimeter

1986-09-30

1988-11-08

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 86, 422 88, 436902, G01N 3122

Patent

active

047833165

ABSTRACT:
A colorimetric gas dosimeter, which contains a granular indicator substance in a closed, transparent, hollow unit that can be opened on one side, is provided in such a way that the diffusion cross section for the hazardous substance molecules is independent of the degree of discoloration of the indicator substance and the detection sensitivity is thereby increased. This is achieved by sub-dividing the hollow unit into several chambers extending along its longitudinal axis, at least one of which is filled with the granular indicator, and is located adjacent to an indicator free chamber and is separated from this by a separating wall permeable to gas.

REFERENCES:
patent: 3033655 (1962-05-01), Grosskopf
patent: 3100692 (1963-08-01), Wachter
patent: 3388975 (1968-06-01), Wallace
patent: 4071319 (1978-01-01), Nugent
patent: 4267023 (1981-05-01), Frant et al.
patent: 4348358 (1982-09-01), McKee et al.
patent: 4528160 (1985-07-01), Eckstein et al.
patent: 4539181 (1985-09-01), Westrup
patent: 4554133 (1985-11-01), Leichnitz
patent: 4680165 (1987-07-01), Vo-Dinh

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