Sterilization detection device and method

Details Sterilization detection device and method Sterilization detection device and method

1976-10-04

1979-03-20

Scovronek, Joseph

Chemistry: physical processes

Physical processes

Crystallization

73356, 422 57, 422 86, G01N 3122, G01K 1112

Patent

active

041451864

ABSTRACT:
In measuring the dose of sterilant delivered to an enclosed space, a mixture of a salt of a strong acid and a weak base and an acid-alkali indicator dye is disposed within a container element impermeable to the sterilant. The container has an opening, and the sterilant passes through the opening into the container where it reacts with successive moieties of the mixture to effect a color change relative to the unreacted mixture. The reaction progressively advances away from the opening as the dose of the sterilant increases, whereby the extent of the advancing color change indicates the integration of time, temperature and sterilant concentration delivered to the enclosed space.

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patent: 3112999 (1963-12-01), Grosskopf
patent: 3378348 (1968-04-01), McConnaughey
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patent: 3620677 (1971-11-01), Morison
patent: 3884641 (1975-05-01), Kraffczyk et al.
patent: 4042336 (1977-08-01), Larsson

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