標準號：ISO 2647-1973
中文標準名稱：羊毛 用投影顯微鏡測定有髓纖維的百分率
英文標準名稱：Wool; Determination of percentage of medullated fibres by the projection microscope
標準類型：W20
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：W20
國際標準分類號：59.060.10
適用范圍：The method is applicable to woolen and worsted products, at all stages, from raw materials to yarn. It utilizes the same apparatus and technique as that described in ISO/R 137. Since the method of preparation and measurements gives a length-biased sample, the result given by this method is an estimate of the length of medullated fibres as a percentage of the total length of all fibres. It cannot be used to estimate the volume of medullation or fibre density.