This method describes a procedure for the quantitative analysis of binary mixtures of polyester with any of the following fibres, by removal of the nonpolyester component: cotton, nylon, and viscose rayon.

If the types of fibres present in the mixtures are not known, they must be identified before quantitative analysis can be undertaken (par. 10.1).

The accuracy of the results obtained with this method will be decreased by the presence of nonfibrous finishes that cannot be removed.

This method may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this method has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any existing applicable regulatory requirements prior to its use.

Time-dated standard