EN ISO 1890This description is for standard: EN ISO 1890ISO 1890:2009 specifies a method for the determination of twist in yarns made from textile glass, carbon, aramid or any other reinforcement fibr
EN ISO 1889This description is for standard: EN ISO 1889ISO 1899:2009 specifies a method for the determination of the linear density of glass-fibre, carbon-fibre, aramid-fibre and any other reinforcem