Optics: measuring and testing – By shade or color – With color determination by light intensity comparison
Patent
1997-03-03
1999-05-04
Kim, Robert
Optics: measuring and testing
By shade or color
With color determination by light intensity comparison
G01J 346
Patent
active
059009446
ABSTRACT:
The present invention provides methods and devices for the quantitative analysis of pesticides with fluorescent pigments. The methods include dry mode, fluid mode, and in-field quantitative pesticide analysis. The methods also include dry mode and fluid mode data acquisition procedure by which linear relationships between spectral data and quantity of pesticide may be determined. The devices include a first and a second pesticide analysis device. The first pesticide analysis device includes a spectrophotometer and logic for determining the amount of pesticide present in a sample. The second pesticide analysis device also includes a spectrophotometer and logic for determining the amount of pesticide present in a sample. The second pesticide analysis device is further configured for in-field quantitative pesticide analysis of samples.
REFERENCES:
patent: 4201791 (1980-05-01), Livaudais, Jr. et al.
patent: 4368591 (1983-01-01), Barke et al.
patent: 4411989 (1983-10-01), Grow
patent: 4975364 (1990-12-01), Taylor et al.
Specification Sheet Hach DR700 Portable Colorimeter.
Specification Sheet Hitachi Instruments, Inc. F-4500 Fluorescene Spectrophotometer.
Day-Glo Color Corp.
Kim Robert
Smith Zandra V.
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