excitation purity

excitation purity

[‚ek‚sī′tā·shən ‚pyu̇r·əd·ē]
(analytical chemistry)
The ratio of the departure of the chromaticity of a specified color to that of the reference source, measured on a chromaticity diagram; used as a guide of the wavelength of spectrum color needed to be mixed with a reference color to give the specified color.
References in periodicals archive ?
LIFE-SAVING BLAZE: Technically speaking, blaze orange, or "hunter orange" as it is just as commonly called, is defined as a daylight fluorescent orange color with a dominant wave length between 595 and 605 nanometers, excitation purity of not less than 85 percent and a luminance factor of not less than 40 percent, This means a hunter wearing it will stand out like a traffic cone among the greens, browns, tans and grays of nature.