Test Method 110-2011
in 1964 by AATCC Committee RA34; Jurisdiction transferred in 1983 to Committee
Purpose and Scope
This test method provides procedures for measuring the whiteness and tint of textiles.
1.2 Whiteness as measured by this test method is an indication of how white
the textiles appears to an average viewer. Tint, if other than zero, is
an indication of a reddish or greenish hue having shifted away form a bluish hue
with a dominant wavelength of 466 nm. The formulas for calculation of whiteness
and tint are those recommended by the CIE.
1.3 Because reflectance is
affected by the nature of the surface of the textile, comparisons can be made
only between samples of the same type of textile.
1.4 The application
of the formulas is restricted to specimens that are called "white" commercially,
that do not differ much in color and fluorescence, and that are measured on the
same instrument at nearly the same time. Within these restrictions, the
formulas provide relative, but not absolute, evaluations of whiteness that are
adequate for commercial use, when employing measuring instruments having suitable
modern and commercially available capabilities.
Copyright © 2014 American Association of Textile Chemists and Colorists, Research Triangle Park, N.C., USA
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