Color comparison reference standard and method for using same

Details Color comparison reference standard and method for using same Color comparison reference standard and method for using same

G - Physics

01

J

150/26

G01J 3/52 (2006.01) G01N 21/29 (2006.01)

Patent

CA 1228526

ABSTRACT OF THE DISCLOSURE An improved method for visually comparing the results of colorimetric analytical test to a color reference standard, enabling substantially improved quanititation to be achieved for such tests, is dis- closed. Also disclosed is improved apparatus, in the form of an improved color comparison reference standard, which is useful in the method. In one embodiment, the standard can comprise a plurality of colored reference areas of differing hues correspond- ing to discrete reference values and to which a colored response area of a colorimetric analytical test can be compared to determine the reference value most closely related to the hue of the colored re- sponse area, and a background area against which the colored reference areas are displayed. The background area has a luminance (L*) value of from about 15 to about 80, and the luminance (L*) value of any two or more adjacent ones of the colored reference areas which are displayed against the portion of the background area.

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