Visual indicator system

Details Visual indicator system Visual indicator system

1989-09-05

1992-03-17

Johnston, Jill

Chemistry: molecular biology and microbiology

Measuring or testing process involving enzymes or...

Involving oxidoreductase

422 56, 422 57, 422 58, 422 61, 426 87, 426232, 435 25, 435805, 435810, 436 1, 436 2, 436127, 436136, 436138, 436904, C12Q 128, C12Q 126, G01N 3122

Patent

active

050968130

ABSTRACT:
Packages which are subject to tampering while in a store or deterioration over time due to the presence of oxygen may be readily identified by placing therein a multi-component visual indicator system which is sensitive to the presence of oxygen. The system, which may be prepared aerobically and then placed into an anaerobic environment for use, is not effected by the presence of reducing agents found commonly in foods, drugs, and cosmetics.

REFERENCES:
patent: 4120658 (1978-10-01), Bruttig
patent: 4169811 (1979-10-01), Yoshikawa et al.
patent: 4447542 (1984-05-01), Gantzner
patent: 4526752 (1985-07-01), Perlman et al.
Allied Corp. "The Breakthrough in Freshness and Distribution Control", (1984).

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