Abstract
Results of different researches [1, 2, 31 , prove that the whiteness as any other color is fully defined by three-color coordinates. Anyhow, the introduction of the colorimetric methods is hindered by some old tradition and inertia which limit the estimation of the whiteness by one figure, as well as the by the tendency to have a simple one-dimensional scale. In this case, there are no one opinion and consent as to one universal formula for estimation of the whiteness since the universal conception of the whiteness is like not to exist [1 ,4, 5] . Depending on the kind of the products to be checked for whitenessproduction, provision is made for its own ideal white color.That is why for each kind of products (paper, cellulose, textile, ceramics, while paint, porcelain, steel sheets etc.) , use should be made of the various methods preliminary based on the colorimetric researches taking into account their comparability with the visual estimations. In some cases, as the colorimetric experiments show [ 1 ], it is really possible to estimate the whiteness by using the simplified methods employing two coordinates (y -albedo z - blueing) and even one three-color coordinate. For example, during manufacturing such materials as paper, cardboard, cellulose and textile, the quality of these materials is checked for whiteness only in blue range of the spectrum. This method of whiteness estimation is controlled by the domestic and international standards [6-9].
