ISO/DIS 1833-4
ISO/DIS 1833-4



ISO 1833-4:2017 specifies a method, using hypochlorite, to determine the mass percentage of protein fibre, after removal of non-fibrous matter, in textiles made of mixtures of certain non-protein fibres and certain protein fibres, as follows:

- wool, other animal-hair (such as cashmere, mohair), silk, protein,


- cotton, cupro, viscose, modal, acrylic, chlorofibres, polyamide, polyester, polypropylene, glass, elastane, elastomultiester, elastolefin, melamine and polypropylene/polyamide bicomponent.

General information 

  •  :  Under development
    You can help develop this draft international standard by contacting your national member
  •  : 3
     : 3
  •  : ISO/TC 38 Textiles
  •  :
    59.060.01 Textile fibres in general

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std 1 61 PDF
std 2 61 Paper
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