1 Scope
This standard specifies the test methods for the determination of wool fibre diameter by means of the projection microscope.
This standard is applicable to wool fibres in any form and wool fibres without obvious cross-section changes after different kinds of treatment process, and also to other fibres of reasonably circular cross-section.
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/T 6978 Test method for the determination of scoured yield of greasy wool — Drying oven method
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
Average diameter
Average value of longitudingal projection width of wool or other fibres.
3.2
Lot sample
As required, one or more of package unit randomly taken from a lot of product and served as the source of laboratory sample.
3.3
Laboratory sample
As required, product unit or partial materials taken from lot sample and served as the source of test sample.
3.4
Test sample
