This standard prescribes a method for quanti-tative chemical analysis of binary mixtures of polyester fibres and cotton or regenerated cellulose fibre in any form, such as fibre, yarn or fabric.
Note — Before conducting an analysis according to this standard, the fibres present in the mixture should be identified ( see IS 667 : 1981 Methods for identifica-tion of textile fibres (first revision ) and the sample to be analyzed should be free from all non-fibrous matter (see IS 9068:1979 Recommended methods for the removal of non-fibrous matter prior to quantitative analysis of fibre mixtures ). Dye in the dyed fibres is considered to be an integral part of the fibre and is not to be removed.
IS 3416-1988 history
1989IS 3416-1988 Methods for quantitative chemical analysis of binary mixtures of polyester fibers with cotton or regenerated cellulose