This standard specifies the model, specification (grade), technical requirements, inspection methods, inspection rules, and packaging, marking, storage and transportation of sheep wool.
This standard is applicable to quality determination of sheep wool (including superfine sheep wool, fine sheep wool, medium fine sheep wool, improved sheep wool and native sheep wool) during production, transaction, processing, quality supervision and import and export inspection.
2Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6976 Test Method for Measure Length of the Wool Staple Natural Formation
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgement of Limiting Values
GB/T 10685 Wool - Determination of Fiber Diameter - Projection Microscope Method
GB/T 14270 Test Method for Fiber Type Content of Hair Fibers
GB/T 21030 Test Method for the Mean and Distribution of Fibre Diameter of Wool and Other Animal Fibre - Optical Fibre Diameter Analyser (OFDA)
GB/T 27629 Determination of Breaking Tenacity of Animal Fibre Bundles
IWTO-12 Measurement of the Mean and Distribution of Fibre Diameter Using the Sirolan-Laserscan Fibre Diameter Analyser
3Terminologies and Definitions
For the purposes of this document, the following terminologies and definitions apply.
3.1
Sheep wool
Wool fibre growing on sheep body, which is referred to as wool.
3.2
Superfine wool
Homogeneous fleece with mean fibre diameter of 19.0 μm or above.