Mixtures
Fibre testing (textiles)
Textile testing
Wool fibres
Determination of content
Silk
Chemical analysis and testing
Quantitative analysis
Extraction methods of analysis
Hair (animal)
Textile fibres
Wool
Chemical tests (textiles)
Link: BS EN ISO 1833-18:2019 Textiles. Quantitative chemical analysis Mixtures of silk with other protein fibres (method using sulfuric acid)
Source: BSI Standards