ISO 1973:2021 PDF

Scope: This document specifies a gravimetric method and a vibroscope method for the determination of the linear density of textile fibres applicable respectively to: a) bundles of fibres; b) individual fibres. Useful data can be obtained on man-made fibres and, with less precision, on natural fibres. This document only applies to fibres which can be kept straight and, in the case of bundles, parallel, during test preparation. It is properly applicable when the fibres are readily freed of crimp. The methods in this document are not applicable to tapered fibres. The vibroscope method is not always applicable to hollow and flat (ribbon-like) fibres.

ISO 1973:2021 Referenced Document

ISO 1130 Textile fibres; Some methods of sampling for testing
ISO 139 Textiles — Standard atmospheres for conditioning and testing AMENDMENT 1
ISO 6989 Textile fibres; Determination of length and length distribution of staple fibres (by measurement of single fibres)

2021 ISO 1973:2021 Textile fibres - Determination of linear density - Gravimetric method and vibroscope method
1995 ISO 1973:1995 Textiles fibres - Determination of linear density - Gravimetric method and vibroscope method
1976 ISO 1973:1976 Textiles; Determination of linear density of fibres; Gravimetric method