DIN EN ISO 137:2016-05

This International Standard specifies the procedure and the measurement conditions for the determination of the wool fibre diameter using a projection microscope. The method is suitable for wool fibres in any form and also for other fibres of reasonably circular cross-section. (In the case of dyed, bleached or finished fibres, the diameter might be different from that of fibres not subjected to such treatments. The estimates of fibre diameter obtained at the various stages of processing one lot of wool will not necessarily be the same.) This document has been prepared by Technical Committee ISO/TC 38 "Textiles" in collaboration with Technical Committee CEN/TC 248 "Textiles and textile products", the secretariat of which is held by BSI (United Kingdom). The responsible German standards committee is NA 062-05-21 AA "Physikalisch technologische Prüfverfahren für Textilien" ("Physical and technological test methods for textiles") at DIN Standards Committee Materials Testing (NMP).