This standard prescribes a method for determination of colour fastness of textile mate-rials of all kinds and in all forms to the action of boiling dilute sodium carbonate solutions.
1.1.1 The method is mainly applicable to natu- ral and regenerated cellulosic textile materials.
Two tests, one with and the other with- out the addition of a reduction inhibitor, are prescribed.
IS 973-1988 history
1989IS 973-1988 Method for determination of color fastness of textile materials to alkali boiling