Standard Practice for Assigning a Standard Commercial Moisture Content for Wool and its Products

Importancia y uso:

4.1 The purpose of this practice is to bring about uniformity of commercial moisture standards in all ASTM specifications relating to wool and its products.

4.2 This practice provides a recommended single value for a standardized commercial moisture content for wool and its products. This avoids difficulties encountered in calculating the amount of moisture-free fiber present in a given mass of wool in any one of the forms listed in 1.1.1 to 1.1.8 due to trade practices which recognize various commercial moisture allowance values used by certain segments of the trade. (See Test Method D584, Section 3.5, Table D1909,D1909 Note E, and the Tables in Practice D2720).

4.3 The recommended commercial moisture content should be used where it is desirable to avoid problems in determining moisture-free fiber content when the form of the wool is changed. For example: from scoured wool (12.0 % moisture content) to worsted yarn, dry spun (13.04 % moisture content).

Subcomité:

D13.13

Referida por:

D1909-13R20E01, D4845-10R18, D2654-22

Volúmen:

07.01

Número ICS:

59.060.10 (Natural fibres)