ISO 80000-4-2019 pdf free.Quantities and units一 Part 4: Mechanics. This International Standard specifies a method for the determination of the dimensional change of fabrics. garments or other textile articles when subjected to an appropriate combination of specified washing and drying procedures. In the case of textile articles or deformable materials, it is necessary to exercise all possible caution in the interpretation of the results. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 139, Textiles — Standard atmospheres for conditioning and testing ISO 3759, Textiles — Preparation, marking and measuring of fabric specimens and garments in tests for determination of dimensional change ISO 6330, Textiles — Domestic washing and drying procedures for textile testing 3 Principle The specimen is conditioned in the specified standard atmosphere and measured before subjection to the appropriate washing and drying procedures. After drying, conditioning and remeasuring of the specimen, the changes in dimensions are calculated. 4 Apparatus and reagents Use apparatus and reagents as specified in ISO 3759 and ISO 6330. 5 Atmospheric conditions The atmospheric…