Gaseous contaminant dosimeter with diffusion device therefor and

Details Gaseous contaminant dosimeter with diffusion device therefor and Gaseous contaminant dosimeter with diffusion device therefor and

1979-10-11

1981-05-05

Marcus, Michael S.

Chemistry: physical processes

Physical processes

Crystallization

73 23, 55158, 422 61, G01N 3122, G01N 3300, B01P 5322, B01D 5910

Patent

active

042656354

ABSTRACT:
A personal dosimeter for measuring the average concentration of a gaseous contaminant over a given period of time is provided. The dosimeter comprises a sealed pouch having a reaction chamber, which contains a gas-collecting medium, and at least one compartment. Each compartment can be separately sealed and can contain a different reagent, the seals being individually breakable such that the reagents can be separately released into the reaction chamber. Into the pouch is sealed a gas diffusion device which consists of a formation of parallel, potted, hollow fibers or filaments. The diffusion device is oriented such that one end of the fibers is open to the atmosphere and the other end communicates with the interior of the reaction chamber.

REFERENCES:
patent: 3113842 (1963-12-01), Udall
patent: 3437448 (1969-04-01), Miczka
patent: 3950980 (1976-04-01), Braan et al.
patent: 3985017 (1976-10-01), Goldsmith
patent: 3992153 (1976-11-01), Ferber
patent: 4040805 (1977-08-01), Nelms et al.
patent: 4046014 (1977-09-01), Boehringer

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