1 Scope
This standard specifies methods of obtaining laboratory samples of textile materials from laboratory lot samples taken from a lot, and gives general directions for the preparation of test specimens of convenient size for chemical tests.
No provision for sampling from the lot is described since it is assumed that the laboratory lot sample has been selected by a suitable procedure and is representative of the lot.
2 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
2.1
lot
counting unit divided according to product material, production process as well as various purposes
2.2
lot sample
one or more package units randomly taken from a lot of products as required and serving as the source of laboratory sample
2.3
laboratory sample
product unit or partial materials taken from lot sample as required and serving as the source of test specimen
2.4
specimen
part taken from laboratory sample and used for conducting test
3 Principle
The laboratory sample is taken so that it is representative of the lot sample. The specimens are taken from the laboratory sample in such a way that each of them is representative of the laboratory sample.
4 Sampling methods
Foreword II
Introduction III
1 Scope
2 Terms and definitions
3 Principle
4 Sampling methods
5 Test report
