Reliability studies in the determination of quantitative covalent fixation of reactive dyes on cellulose

Abstract

The accuracy in the determination of the fixed proportion of two hetero bi-functional reactive azo-dyes on cotton cellulose was studied in the present paper. One direct and two indirect (indirect I and indirect II) analytical methods were used in the experiments. ANOVA (Analysis of Variance) statistical method was used to evaluate the precision of the measurements. The most reliable results could be achieved by using the indirect I method, while the indirect II method was much inferior. The use of direct method, being definitely more complicated than any of the indirect ones, produced least accuracy.