Beverage freshness monitor

Details Beverage freshness monitor Beverage freshness monitor

1999-01-28

1999-09-21

Font, Frank G.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

99285, G01N 2100, A23F 3100

Patent

active

059561513

ABSTRACT:
Fresh coffee is transmissible to red light, but as the coffee becomes stale, the organic compounds degrade and the brew becomes less transmissible to the light. To monitor coffee freshness, a beam of light is passed through a transparent coffee pot and the transmissibility of the brew is displayed as a measure of freshness.

REFERENCES:
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patent: 4925681 (1990-05-01), Mai et al.
patent: 5384143 (1995-01-01), Koyama et al.
patent: 5714094 (1998-02-01), Bertholet et al.
patent: 5724882 (1998-03-01), Gallas et al.

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