This method is suitable for qualitative identification of cotton, linen, silk, wool and chemical fibers, but it is difficult to determine hollow fibers.
FZ/T 01057.9-1999 history
2012FZ/T 01057.9-2012 Test method for identification of textile fibers.Part 9:Birefringence
2007FZ/T 01057.7-2007 Test method for identification of textile fibers- Part 7: Density gradient column method
1989FZ/T 01057.9-1999 Test method for identification of textile fibres.Density gradient column method
FZ/T 01057.9-1999 Test method for identification of textile fibres.Density gradient column method was changed to FZ/T 01057.7-2007 Test method for identification of textile fibers- Part 7: Density gradient column method.