1 Scope
This standard specifies test methods for ethanol extractives, ash, vegetable matter, total ali-insoluble impurities in scoured wool.
This standard is applicable to all kinds of scoured wools, other scoured animal wools may also make reference to this standard.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 1523 Wool
GB/T 8170 Rules for rounding off of numberical values
GB/T 14269 The sampling methods for wool testing
3 Terms and Definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
Ethanol extractives
Matters extracted from scoured wool surface or internal tissues, use ethanol as solvent.
3.2
Ash
Residual matters of scoured wool after burned at 750℃.
