ASTM D1575-90(2008)

1.1 This test method covers the estimation of the average fiber length and length distribution of wool in nonparallel assemblies, such as scoured wool, and in card sliver.

1.2 This test method is applicable to many fibers other than wool if in the form of a nonparallel assembly or in a card sliver.

1.3 This test method is not applicable to unscoured wool or to wool top.

1.4 This test method specifically requires length in inches and mass in metric units, and is not contrary to ASTM policy. The values stated in inch-pound units are to be regarded as the standard. The information in parentheses is for information only.

Note 1 - The determination of staple length of grease wool is covered in Method D 1234, Sampling and Testing Staple Length of Grease Wool, and the average length of fibers in wool top is covered in Test Method D 519.

1.5 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.