ForewordScopeNormative referencesTerms and definitionsPrincipleReagents and apparatusGeneralReagentApparatusTest procedureGeneralRemoval of the non-cellulosic components of the flax fibresDissolution of viscose, cupro, modal or lyocell fibreCalculation and expression of resultsCalculation of loss in mass during pre-treatmentCalculation of dry mass of after-transfer mixture corrected to its initial dry mass before pre-treatmentCalculation of dry masses of viscose or cupro or modal or lyocell and pretreated flax fibresCalculation of the percentages of each component with agreed percentage additions for moisturePrecision