Abstract
The importance of the discoloration of wool is indicated by the volume of a colour space, which theoretically may be obtained by dyeing the discoloured wool. This obtainable volume (OV) is difficult to calculate, and some simple combinations of the measurements made with a colorimeter are therefore compared with OV. For a range of wool samples from seven countries, several whiteness indices were compared with OV values calculated for the CIE x, y, Y colour space, the Adams–Nickerson space, and the Glasser ‘cube-root’ space. Reflectance values at single wave-lengths were substituted in the whiteness formulae, and these results were also compared with OV values. Several of the formulae give a near-perfect correlation with OV.
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