Method and article for providing an indication of the presence o

Details Method and article for providing an indication of the presence o Method and article for providing an indication of the presence o

1993-02-01

1993-12-14

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Oxygen containing

422 26, 422 58, 436138, G01N 3122

Patent

active

052702170

ABSTRACT:
A device for evaluating the efficacy of prevacuum steam sterilizers by separating, collecting and detecting the presence of air in association with the steam. The device includes a receptacle containing an adsorbent for directly separating air from steam without requiring a change of state, from gas to liquid, of the steam. During sterilizer evacuation, the interstices of the adsorbent and the device offer a challenge to air removal. The receptacle has a portal to provide communication with the sterilizer environment and a defined path for the steam to traverse, in a progressive manner, moving to the distal end of the receptacle. The adsorbent retains the moisture during sterilization. At the distal end of the column is an opening into an air collecting chamber. Within this chamber is located an article that indicates the presence of air in the steam. The indicator can be chemical or biological, and indicates whether any air pockets existed which prevented complete contact between the steam and the indicator.

REFERENCES:
patent: 2844026 (1958-07-01), Wischmeyer et al.
patent: 3479131 (1969-11-01), Scoffield et al.
patent: 3967494 (1976-07-01), Joslyn
patent: 4115068 (1978-09-01), Joslyn
patent: 4594223 (1986-06-01), Dyke et al.
"Union Carbide Molecular Sieves" publication F-1979F, Sep. 1983 3M, Lithographed in U.S.A.

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