Control of gaseous hydrogen peroxide concentration during steril

Details Control of gaseous hydrogen peroxide concentration during steril Control of gaseous hydrogen peroxide concentration during steril

1996-12-03

1998-12-08

Glick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

25033909, 250343, G01N 2135

Patent

active

058473939

ABSTRACT:
On line and essentially continuous measurements of hydrogen peroxide vapor in the presence of water vapor can be made using near infrared (NIR) spectroscopy using fiber optic cables to transmit infrared radiation between, e.g, a sterilization chamber and the NIR instrument. Measurement of hydrogen peroxide concentration in the foregoing manner is incorporated into a control system which automatically adds gaseous hydrogen peroxide to the sterilization chamber when the measured concentration falls below a precalculated value. Such a control system ensures the presence in the sterilization chamber of an adequate concentration of gaseous hydrogen peroxide to effect sterilization throughout the sterilization procedure.

REFERENCES:
patent: 4800279 (1989-01-01), Hieftje et al.
patent: 5532487 (1996-07-01), Brearley et al.
patent: 5600142 (1997-02-01), Van Den Berg et al.

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