International Organization for Standardization (ISO)
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ISO 6939:1988
Scope
Applicable to spun single and folded yarns of any fibre or mixture of fibres manufactured by any spinning systems. Not recommended for testing filament yarns, glass yarns, more complex structures such as cabled yarns or cords. Not applicable to those yarns having a diameter so great as to prevent the winding of the skein in two even layers. - Replaces the first edition (ISO 6939:1982) and constitutes its minor revision.
ISO 6939:1988 history
1988ISO 6939:1988 Textiles; yarns from packages; method of test for breaking strength of yarn by the skein method
1982ISO 6939:1982 Textiles — Yarns from packages — Method of test for breaking strength of yarn — Skein method