Standard Test Method for Wool Content of Raw Wool—Commercial Scale

Importancia y uso:

5.1 This test method is considered satisfactory for use as a referee method for the determination of the wool base content and the clean wool fiber present in a lot of raw wool. If there are differences of practical significance between reported test results for two laboratories (or more), comparative test should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use the samples for such a comparative test that are as homogenous as possible, drawn from the same lot of material as the samples that resulted in the disparate results during the initial testing and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future results for that material be adjusted in consideration of the known bias.

5.2 This test method is also used in studies aimed at deriving suitable formulas for estimating the allowances to be made for wool unavoidably lost or destroyed in such commercial operations as carding, combing, or carbonizing.

Subcomité:

D13.13

Referida por:

D4845-10R18, D0584-10R18, D1574-22

Volúmen:

07.01

Número ICS:

59.060.10 (Natural fibres)

Palabras clave:

content; wool;