Indicator material

Details Indicator material Indicator material

1979-07-06

1982-05-04

Gron, Teddy S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

23230R, 23232R, 73 23, 116206, 252408, 422 57, 422 58, 422 60, 422 86, G01N 2178, G01N 3122

Patent

active

043281818

ABSTRACT:
Indicator material for monitoring personal exposure to hazardous substances in ambient air comprising a pigment material, a binder and a sensitizer coated upon a transparent support member as a porous coating which permits gaseous diffusion throughout the coating is disclosed. Detection or monitoring is effected when the indicator material undergoes a visually observable reaction with hazardous material in the atmosphere at room temperature.

REFERENCES:
patent: 2174349 (1939-09-01), Littlefield
patent: 2738257 (1956-03-01), Darby
patent: 2864725 (1958-12-01), Sorg et al.
patent: 3112999 (1963-12-01), Grosskopf
patent: 3451741 (1969-06-01), Manos
patent: 3528780 (1970-09-01), Radawski
patent: 3545930 (1970-12-01), Walker et al.
patent: 3574552 (1971-04-01), Rakowski
patent: 4115067 (1978-09-01), Lyshkow
patent: 4169811 (1979-10-01), Yoshikawa et al.
patent: 4222745 (1980-09-01), Cloyd
patent: 4256694 (1981-03-01), McAllister et al.

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