Sampling method for testing of cotton fibers
1 Scope
This document describes the sampling and preparation methods for the lot sample, laboratory sample, test sample, and test specimen for testing of cotton fibers. This document is applicable to the sampling for testing of cotton fibers.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB1103.1 Cotton - Part 1: Saw ginned upland cotton
GB1103.2 Cotton - Part 2: Roller ginned upland cotton
GB/T1103.3 Cotton - Natural color uplands cotton
GB/T 19635 Cotton - Sea island cotton
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
lot sample
one or more cotton samples taken from a batch of cotton according to requirements as a representative or representatives of the batch of cotton to be sampled
3.2
laboratory sample
cotton sample(s) taken from lot sample(s) according to requirements as a representative (representatives) of lot sample(s)
3.3
test sample
cotton sample(s) taken from laboratory sample(s) according to requirements as a representative (representatives) of laboratory sample(s)
3.4
test specimen
cotton fiber(s) taken from laboratory or test sample(s) to be used in a test as a representative (representatives) of laboratory or test sample(s)
3.5
test by batch
behavior of testing one or more samples formed by partial sampling of samples from different bales of the same batch of cotton separately to understand their certain properties or results
3.6
test by sample
behavior of testing samples taken from different bales of the same batch of cotton one by one, or testing a sample combined by all samples to understand their certain properties or results
4 Principle
The sampling method combines all or part of the steps of taking lot sample(s) from a batch of cotton, laboratory sample(s) from lot sample(s), test sample(s) from laboratory sample(s), and one or more test specimens from test sample(s). Each step is to minimize the quantity of cotton fibers while maintaining the representativeness of the cotton fibers under test. See Figure 1 for the sampling flow chart.
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Instruments and tools
6 Sampling
棉纖維試驗取樣方法
1 范圍
本文件描述了棉纖維試驗用批樣、實驗室樣品、試驗樣品、試驗試樣的抽取和制備方法。 本文件適用于棉纖維的試驗取樣。
2 規范性引用文件
下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中，注日期的引用文 件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其最新版本(包括所有的修改單)適用于 本文件。
GB1103.1 棉花 第1部分：鋸齒加工細絨棉
GB1103.2 棉花 第2部分：皮輥加工細絨棉
GB/T1103.3 棉花 天然彩色細絨棉
GB/T 19635 棉花 長絨棉
3 術語和定義
下列術語和定義適用于本文件。
3.1
批樣 lot sample
按規定從一批棉花中抽取的一個或多個棉樣，作為被抽樣批棉花的代表。
3.2
實驗室樣品 laboratory sample
按規定取自批樣的棉樣，作為批樣的代表。
3.3
試驗樣品 test sample
按規定取自實驗室樣品的棉樣，作為實驗室樣品的代表。
3.4
試驗試樣 test specimen
從實驗室樣品或試驗樣品抽取的試驗一次所用的棉纖維，作為實驗室樣品或試驗樣品的代表。
3.5
按批試驗 test by batch
對取自同一批棉花不同棉包的樣品按規定均衡分組混合后部分抽取形成的一份或多份樣品分別進 行測試，以了解其某些性能或結果的行為。
3.6
按樣試驗 test by sample
對取自同一批棉花不同棉包的樣品逐個進行測試，或將全部樣品合并成一個樣品進行測試，以了解 其某些性能或結果的行為。
4 原理
從一批棉花中取出批樣，從批樣中取出實驗室樣品，從實驗室樣品中取出試驗樣品，從試驗樣品中 取出一個或一個以上的試驗試樣的全部或部分步驟組合的取樣方法。其每一步都在盡量減少棉纖維的 數量，而又保持著被試驗棉纖維的代表性。取樣流程見圖1。
