COVENIN 857-1976 Measurement of the strength of textile raw materials against bleach (hypochlorite) in the Venezuelan Textile Raw Materials Color Fastness Standard
1.1 This standard contemplates the test method to assess the color resistance of textile materials at any stage of production to the action of bleaching baths containing sodium or calcium hypochlorite in the concentrations normally used. in industrial money laundering. 1.2 This standard is applicable mainly to natural and regenerated cellulosic fibers. 1.3 This standard is also applicable to determine the water fastness of a certain dye by dyeing it. at the standard intensity 1/l UR or another expressly indicated, a specimen, which is subjected to the test described above.
COVENIN 857-1976 history
1975COVENIN 857-1976 Measurement of the strength of textile raw materials against bleach (hypochlorite) in the Venezuelan Textile Raw Materials Color Fastness Standard