ASTM D584-10
Standard Test Method for Wool Content of Raw Wool-Laboratory Scale
- Standard No.
- ASTM D584-10
- Release Date
- 2010
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D584-10(2018)
- Latest
- ASTM D584-10(2018)
- Scope
This test method is considered satisfactory for acceptance testing of commercial shipments since this test method has been used extensively in the trade for acceptance testing.
In case of dispute arising from differences in reported test results when using Test Method D584 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative testing to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogenous as possible and that are from a lot of the type material in question. The test specimens should then be assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student''s t-test for unpaired data and an acceptable probability level chosen by the two parties before testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of known bias.
The wool-base content of wool in any condition or form is a basic quantity. From it may be calculated commercial masses or yields in any of the various recognized defined systems used in international commerce (Note 1).
The procedures for determining the wool base content of greasy wool provided in this test method and in IWTO Method 19-85(E) are in essential agreement.
Note 38212;This is not true for scoured wool, as IWTO Method 19-85(E) does not require rescouring of scoured wool containing less than 5% residual grease.
Not all of the wool base present in a lot of raw wool can be recovered in useful form by commercial cleaning operations. The amount of wool loss varies, depending on factors such as the character of the wool, the nature and percentage of the impurities present, the cleaning process and equipment used, and so forth.
No ASTM standard specifies or recommends any specific procedure or practice for estimating anticipated loss of wool during commercial cleaning (or other) operations. The following statutory practice is described solely for information:
For the purpose of duty assessment on importations of raw wool into the United States, the Tariff Schedules of the United States provides a statutory formula for calculating the allowance to be made for wool “that would ordinarily be lost during commercial cleaning operations.” The formula is based on the clean wool fiber present (called “absolute clean content” in the Tariff Schedules) and on the vegetable matter present. The allowance, in terms of clean wool fiber present, is equal to 0.5 % of the clean wool fiber present plus 60 % of the vegetable matter present, the total allowance not to exceed 15 % of the clean wool fiber present. The dutiable quantity (called “clean yield” in the Tariff Schedules) is the difference between the clean wool fiber present and the allowance so calculated.
1.1 This test method covers a laboratory procedure for the determination of the wool base content and the clean wool fiber present in samples of raw wool. This test method is also applicable to other animal fibers such as mohair, cashmere, alpaca, and camel hair.
ASTM D584-10 Referenced Document
- ASTM D1060 Standard Practice for Core Sampling of Raw Wool in Packages for Determination of Percentage of Clean Wool Fiber Present
- ASTM D1113 Standard Test Method for Vegetable Matter and Other Alkali-Insoluble Impurities in Scoured Wool
- ASTM D123 Standard Terminology Relating to Textiles
- ASTM D1334 Standard Test Method for Wool Content of Raw Wool-Commercial Scale
- ASTM D2525 Standard Practice for Sampling Wool for Moisture
- ASTM D2720 Standard Practice for Calculation of Commercial Weight and Yield of Scoured Wool, Top, and Noil for Various Commercial Compositions
- ASTM D4845 Standard Terminology Relating to Wool
- ASTM E337 Standard Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
ASTM D584-10 history
- 2018 ASTM D584-10(2018) Standard Test Method for Wool Content of Raw Wool—Laboratory Scale
- 2010 ASTM D584-10 Standard Test Method for Wool Content of Raw Wool-Laboratory Scale
- 1996 ASTM D584-96(2005) Standard Test Method for Wool Content of Raw Wool-Laboratory Scale
- 1996 ASTM D584-96 Standard Test Method for Wool Content of Raw Wool-Laboratory Scale
