Method for correcting instrumental error of spectroscope of opti

Details Method for correcting instrumental error of spectroscope of opti Method for correcting instrumental error of spectroscope of opti

1994-11-14

1997-01-07

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

356402, 356243, 36457102, 36457105, G01J 300

Patent

active

055922902

ABSTRACT:
A method for correcting an instrumental error due to wavelength error of a spectroscope of an optical analyzer for measuring an optical density reflected from or transmitted through a dry analysis element. One standard color plate having a standard optical density OD.sub.ST is measured by an optical analyzer to be corrected to obtain an measured value OD.sub.M. A measured optical density OD.sub.S of the element applied with a sample through the optical analyzer to be corrected is corrected by using a ratio of OD.sub.M /OD.sub.ST to obtain a corrected measured value OD.sub.C of the sample. The standard color plate to be used contains an indicator dye contained in the non-reacted dry analysis element or a dye having an absorption spectrum same as or similar to that of the indicator dye in the measurement wavelength range. Another correction method in consideration of a layer coefficient of a dry analysis element is also provided.

REFERENCES:
patent: 4729657 (1988-03-01), Cooper et al.
patent: 4832488 (1989-05-01), Hirai et al.
patent: 4884213 (1989-11-01), Iwata et al.
patent: 5016203 (1991-05-01), Komatsu et al.
patent: 5357336 (1994-10-01), Ruhl, Jr. et al.

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