scope:

PURPOSE AND SCOPE

This method determines loss in strength and yellowing of woven or knitted fabrics due to chlorine retained in laundering operations involving the use of chlorine bleach and followed by pressing. IT may be used on any fabric or finish that is not physically damaged by the 185° C heat treatment (Note 1).

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.

Note 1: When it is suspected that either fabric or finish is susceptible to damage by heating, this can be determined by running a distilled-water control; that is, a test piece of the fabric is run through the entire procedure, but using distilled water in place of the hypochlorite solution.

If this loss is appreciable, there is some question as to whether the chlorine damage test is applicable. It is usually not necessary to determine the effect of wet chlorination on the fabric, as this factor is cancelled out in the calculation for chlorine damage.