Причина отмены This specification is applicable in the classification of alpaca into types according to fineness.

Formerly under the jurisdiction of Committee D13 on Textiles, this specification was withdrawn in January 2018 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

Значение и использование

This specification for fineness is intended as a guide for production, preparation, and marketing (Note 1) by comparing the average fiber diameter of a measured specimen with the fineness specifications for the various types listed in Table 1. The standard deviation which expresses measured variability of a specimen may be compared with the average shown in Table X2.1.

Note 1—Test Method D 2130 does not include any values for the precision to be expected in the testing of alpaca fibers. In an interlaboratory test in which six laboratories each made one test on each of six type samples, HTB-CB, HAXB-CB, HAAB-CB, HAB-CB, HLPB-CL, and HSKB-CL, the coefficient of variation of the average fiber diameters between laboratories, including test variation, was 3.2, 4.7, 3.8, 4.5, 2.2, and 0.93 % for the respective alpaca types.

TABLE 1 Fineness Specifications for Types of Alpaca

TypeAverage Diameter, μm T Extra under 22.00 T 22.00 to 24.99 X 22.00 to 24.99 AA 25.00 to 29.99 A 30.00 to 35.99 SK over 30.00 LP over 30.00 Реферат

This specification is applicable in the classification of alpaca into types according to fineness. Five types of alpaca have been classified according to its average diameter limit, namely Type T Extra, Type T, Type X, Type AA, Type A, Type SK, and Type LP.

Область применения

1.1 This specification is applicable in the classification of alpaca into types according to fineness.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3 This standard does not purport to address all of 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.