International Organization for Standardization (ISO)
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ISO 1136:2015
Scope
This International Standard specifies a method for the determination of the mean diameter of wool fibres, using an apparatus which passes a current of air through a bundle of fibres.
This International Standard is applicable to clean, unmedullated wool fibres dispersed in a uniform, open state. It provides a method particularly suitable for combed slivers. The dichloromethane extractable matter content of the specimen must not exceed 1,0 %. It is applicable to oil-combed slivers after cleaning with an organic solvent.
The method described in this International Standard is less accurate for lambswool and for wool which is appreciably medullated (see Annex D) and heavily dyed wool.
ISO 1136:2015 Referenced Document
ISO 139:2005 Textiles - Standard atmospheres for conditioning and testing
ISO 1136:2015 history
2015ISO 1136:2015 Wool - Determination of mean diameter of fibres - Air permeability method
1976ISO 1136:1976 Wool; Determination of mean diameter of fibres; Air permeability method