AS 2622:2019 Textile products — Fibre content labelling
5.1  Test method
The fibre content of a product shall be determined in accordance with the methods of AS 2001.7,as applicable.
Where AS 2001.7 does not apply, fibre content shall be determined in accordance with an appropriate method from the ISO 1833 series, AATCC 20, AATCC 20A or ASTM D629.
Results shall be based on clean, dry mass with allowances for moisture and other matter in accordance with AS 2001.7—2005 Section 2.
5.2  Components requiring separate determination
Where a textile product includes textile fibre filling, lining or both, the fibre content of these components is determined separately for individual listing on the fibre content label, see Clauses 6.1.6 and 6.1.7.
5.3  Components excluded from fibre content determination
The following components shall not be considered in determining the fibre content of made-up products:
(a) Wearing apparel and household textiles
Any items applied by embroidery, overlay, appliqué or other methods of attachment including basques, belting, binding, braids, buttons, collars, cuffs, gussets, labels, interlinings, padding,sewing threads, slide fasteners, tapes, elastic, ribbons and decorative trim.
(b) Carpets and other floorcoverings
Backing, unless such backing has the same fibre content as the pile.When supplied as separate items, the items above shall be labelled according to the requirements of this standard.
5.4  Allowable tolerances for fibre content
The following shall apply:
(a) Textile products manufactured from more than one type of fibre For textile products which have been manufactured from more than one type of fibre, the differences between the percentages stated on the label and those determined using the specified methods of measurement shall be not greater than 5 % of the total mass of the fibres from which the product has been made. See the example below for acceptable differences.
(b) Technical grounds and decorative effect
A textile product shall contain a cumulative maximum of 5 % by weight of fibres other than those stated on the label provided their addition can be justified on technical grounds (e.g. elastane in cuffs , socks, welts, hems) or as decorative effect (e.g. metallic thread).