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Description of BS EN ISO 20418-3:2020 2020This document specifies a qualitative and quantitative procedure to determine the composition of animal hair fibre blends (made of wool, cashmere, yak, alpaca, camel or angora) by LC-MS without protein reduction. NOTEÂ 1 The composition of non-animal hair fibres can be measured by ISOÂ 1833 (all parts) . Both results are combined to determine the total fibre composition. The method is based on a preliminary identification, by light microscopy, of all fibres in the blend on the basis of their morphology, according to ISO/TR 11827[ 4]. It is not applicable if fibres of the same animal species (such as blends of cashmere and mohair) are present. NOTEÂ 2 In this case, the quantitative analysis is performed using microscopical analysis [for example, ISOÂ 17751 (all parts) ].
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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