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Abstract

Dyeing as it is known today in the textile industry is a technical process which has recently graduated from the stage of being an art to becoming a science. The primary thing responsible for this change is the control of the variables in the process. The spectrophotometer is a physi cal tool which is eminently suited to measure the most important variable of all, the shade and strength of the dyestuffs themselves, whether they be in solution or on the fiber. The general principle of operation of several of these instruments is explained. In practical applications of color measurement, some of the techniques employed to obtain and translate spectrophotometric data into useful information are discussed. Examples of these are standardization of both water soluble and certain insoluble dyes; measurement of production dye-mixture solutions and print pastes in order to control the color before their use on fabric; qualitative and quantitative esti mation of dyes on the fiber; and study of the mechanism of the dyeing process itself.

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The Spectrophotometer as an Aid to Dyeing

Abstract

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References