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Significance and Use
These specifications are considered satisfactory for classifying wool or mohair by grade and provide a basis for acceptance of commercial shipments.
Grade determined by visual examination is a common trade practice. In case of doubt or dispute, comparison of the measured average fiber diameter and fiber diameter standard deviation with the respective specification shall be used as the referee procedure for assigning grade.
This specification is not intended for application to mixed lots, that is, lots of wool or mohair consisting of fleeces of different grades that are to be segregated into smaller more homogeneous lots before use.
1.1 These specifications cover the classification, by fineness grade, of wool or mohair that is in the grease, pulled, washed, or scoured state, or in the form of card sliver.
1.2 These specifications are applicable also to assignment of grade for wool or mohair in spun materials or products processed beyond carding on the woolen system but not on the worsted system which involves a combing process.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D2130 Test Method for Diameter of Wool and Other Animal Fibers by Microprojection
D2252 Specification for Fineness of Types of Alpaca
D3992 Specifications for Fineness of Wool Top or Mohair Top and Assignment of Grade
D4845 Terminology Relating to Wool
ICS Number Code 59.060.10 (Natural fibres)
UNSPSC Code 11151508(Wool fibers)