Textile fibres — Determination of length and length distribution of staple fibres (by measurement of single fibres)
STANDARD published on 1.5.1981
Designation standards: ISO 6989:1981
Publication date standards: 1.5.1981
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: International technical standard
Category: Technical standards ISO
Description / Abstract: Specifies three methods for determination - method A: on a straightened fibre on a graduated rule, under a light tension applied with the aid of forceps and grease; - method B: measurement, using an opisometer, of the length of the image of fibre enlarged by projection on a screen; - method C: by use of a semi-mechanical device. - Intended to replace two existing International Standard, ISO 270 and ISO 1822.