G - Physics – 01 – N
Patent
G - Physics
01
N
340/124.6
G01N 21/90 (2006.01) G01N 21/64 (2006.01) G01N 21/94 (2006.01) G01N 33/00 (2006.01)
Patent
CA 1313241
FP-0181-A TITLE METHOD FOR DETECTING THE PRESENCE OF CONTAMINANTS IN A RESUABLE PLASTIC FOOD OR BEVERAGE CONTAINER ABSTRACT OF THE DISCLOSURE This invention relates to a method for detecting whether contaminants are on or have migrated into the body of a plastic reusable food or beverage container. The invention uses a sensor attached to the inside of the container which changes; optical density when it is exposed to certain contaminants. The change in optical density is detected by illuminating the sensor with ultraviolet light and then measuring the effect that the sensor has on the ultraviolet light.
594767
Craig Alan Robert
Davis James Edward
Steichen John Carl
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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