ISO 20418-3:2020 PDF

Scope: This 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. NOTE 1 The composition of non-animal hair fibres can be measured by ISO 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. NOTE 2 In this case, the quantitative analysis is performed using microscopical analysis [for example,

ISO 20418-3:2020 Referenced Document

ISO 1833-1 Textiles — Quantitative chemical analysis — Part 13: Mixtures of certain chlorofibres and certain other fibres (method using carbon disulfide/acetone)
ISO 3696 Water for analytical laboratory use; Specification and test methods

2020 ISO 20418-3:2020 Textiles — Qualitative and quantitative proteomic analysis of some animal hair fibres — Part 3: Peptide detection using LC-MS without protein reduction