Colorimetric vinyl chloride indicator

Details Colorimetric vinyl chloride indicator Colorimetric vinyl chloride indicator

1975-06-03

1976-06-29

Lutter, Frank W.

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55DIG33, 55DIG34, 116114AM, 252408, 73 23, 23254R, B01D 4630

Patent

active

039664406

ABSTRACT:
A colorimetric indicator for use in indicating the impending exhaustion of a vinyl organo filtering device. The colorimetric indicator material consists of activated alumina impregnated with between 0.5 to 5.0% by weight potassium permanganate and is positioned immediately behind a window in a canister or cartridge used in filtering vinyl organo materials.

REFERENCES:
patent: 1537519 (1925-05-01), Yablick
patent: 1963874 (1934-06-01), Stampe
patent: 2210862 (1940-08-01), Tronstad
patent: 3047993 (1962-08-01), Robbins
patent: 3350175 (1967-10-01), Clay
patent: 3455656 (1969-07-01), Roberts et al.
patent: 3684456 (1972-08-01), McConnaughey
E. S. Gronsberg, Colorimetric Determination of Vinyl Chloride in Air, Chemical Abstracts, vol. 65, 1966, p. 17591.

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