Regulations for sampling and testing of wool
1 Scope
This document specifies the operation procedures and requirements for taking representative quality samples or lot samples from soft and hard sheep wool packages directly or using appropriate tools, the test methods of staple, wool base and fiber diameter, and the requirements for re-inspection and certification.
This document is applicable to the sampling process for raw wool production, trading, processing and quality supervision of sheep wool.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions 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.
GB 1523 Sheep wool
GB/T 6976 Test method for measure length of the wool staple natural formation
GB/T 6978 Test method for the determination of scoured yield of greasy wool - Drying oven method
GB/T 14270 Test method for fiber type content of hair fibers
GB/T 14271 Test method for the determination of scoured yield raw wool - Oil pressure method
GB/T 27629 Determination of breaking tenacity of animal fibre bundles
GB/T 41558 Determination of staple length and strength
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 1523 and the following apply.
3.1
wool lots
bulk lot and trading lot in the process of trading
4 Instruments and tools
4.1 Bale breaker
4.1.1 Bale breaker for bale of non-thermoplastic material
Sharp knives and pliers.
4.1.2 Bale breaker for bale of thermoplastic material
Metal bar or sharp knives that can form slit cracks by melting packaging fabric without fuzzing.
4.2 Grab sampler
See A.1 and A.2 in Annex A for the jaw function of the grab sampler and the grab sampling method, respectively.
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Instruments and tools
5 General requirements
6 Sampling methods
7 Test
8 Re-test
9 Certificate contents
Annex A (Informative) Grab machine and grab method
Annex B (Normative) Minimum number of drilled cores per bale
Bibliography
