Standard Practice for Core Sampling of Raw Wool in Packages for Determination of Percentage of Clean Wool Fiber Present

Importancia y uso:

5.1 Core sampling is widely accepted, when applicable, for obtaining a laboratory sample representative of the clean wool fiber present in a lot of packaged raw wool.

5.2 If the wool is so loosely packed that a core cannot be cut, or if it is so highly compressed that the sampling tool cannot readily penetrate into the package to the required depth and in the required direction, core sampling is not applicable. The density of wool in most types of commercial packages is suitable for sampling by this method.

5.3 The procedure described in this practice is adapted to the application of statistical methods for estimating the size of sample required to achieve a required level of sample precision at minimum cost.

Note 1: The basic sampling equipment, operating procedure, and statistical approach used in this practice have been adapted for sampling lots of wool for the determination of other properties that are not affected by boring, such as average fiber diameter, and for sampling lots of other bulk fibers in packages.

FIG. 1 Small Diameter Wool Sampling Tool (United States Customs Service)

(Metric equivalents may be calculated by multiplying inches by 25.4 to obtain equivalent dimensions in millimetres.)

Subcomité:

D13.13

Referida por:

D6466-10R18, D4845-10R18, D0584-10R18, D2462-22, D1334-18, D2130-22, D1282-18, D1576-22, D2525-22

Volúmen:

07.01

Número ICS:

59.060.10 (Natural fibres)

Palabras clave:

sampling; wool content;