Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1995-07-27
1999-02-16
Glick, Edward J.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
25033909, G01N 2125, G01N 2135
Patent
active
058723595
ABSTRACT:
The invention includes a system and a method for maintaining a selected concentration of a sterilant vapor during vapor phase sterilization. The system includes a sterilization chamber with a source of multicomponent vapor containing a sterilant vapor, an electromagnetic radiation source capable of generating radiation at a plurality of wavelengths, a radiation detector for detecting and quantitating the electromagnetic radiation absorbed at the wavelengths, the detector generating absorbance signals proportional to the concentration of the sterilant vapor in the multicomponent vapor, a microprocessor programmed to compare the absorbance signals with reference absorbance signals, to calculate the sterilant vapor concentration therefrom and to generate an output signal, and a controller to receive the output signal and to control addition of the sterilant vapor to the sterilization chamber to maintain a selected concentration of the sterilant vapor in the sterilization chamber during the sterilization process. The method allows sterilization conditions to be optimized to reduce the time required for and to increase the sterilization efficacy of the sterilization procedure.
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Sparber George
Stewart Bonnie
Zell Peter
American Sterilizer Company
Glick Edward J.
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