Method and apparatus for sensing the presence of microbes

Details Method and apparatus for sensing the presence of microbes Method and apparatus for sensing the presence of microbes

1996-06-03

1998-06-02

Porta, David P.

Radiant energy

Luminophor irradiation

With ultraviolet source

2504591, G01N 2164

Patent

active

057604061

ABSTRACT:
Method and apparatus for the detection of aerobic microbes on non-living surfaces in which electromagnetic radiation having a wavelength greater than 350 nm is directed onto the surface to cause excitation of pyridine nucleotides present in microbial cells to emit radiation having a higher wavelength. That higher wavelength radiation and reflected radiation is then sensed as a measure of the amount of microbial cells on the surface.

REFERENCES:
patent: 4162405 (1979-07-01), Chance et al.
patent: 4631413 (1986-12-01), Jensen et al.
patent: 4877966 (1989-10-01), Tomei et al.
patent: 5474910 (1995-12-01), Alfano

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