Standard Historical Last Updated: Aug 28, 2012
ASTM D3991-94(2006)

Standard Specifications for Fineness of Wool or Mohair and Assignment of Grade


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.

Note 1 - For fineness specifications for wool top, mohair top, and alpaca, refer to Specifications D 3992 and D 2252.

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Book of Standards Volume: 07.01
Developed by Subcommittee: D13.13
Pages: 3
DOI: 10.1520/D3991-94R06
ICS Code: 59.060.10