This standard specifies two methods, i.e., Method A (separation method) and Method B (chemical analysis method), for determining the fibre content in products containing elastane.
Method A in this standard is applicable to products which allow to manually separate elastane from other fibres.
Method B in this standard is applicable to binary products containing elastane.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications does not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 2910-1997 Textile - Binary Fibre Mixtures - Quantitative Chemical Analysis (eqv ISO 1833: 1997)
3 Principle
The following methods shall be selected according to the types of the products.
3.1 Method A: manually separate the elastane from other fibres; dry, cool and weigh the elastane and calculate its percentage content.
3.2 Method B: as for binary products, after the components are qualitatively identified, select proper reagent to dissolve and remove one component, wash, dry, cool and weigh the insoluble fibre, and then calculate the percentage content of each component.
4 General Test Principle
FZ/T 01095-2002 The following standards are cited：
