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BS ISO 20921:2019

BS ISO 20921:2019

$102.76

Textiles. Determination of stable nitrogen isotope ratio in cotton fibres

Published By Publication Date Number of Pages
BSI 2019 20
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This document specifies the determination of the ratio of nitrogen isotopes in cotton fibres that are used for textile production. It applies not only to cotton textiles but also to raw cotton taken from cotton fields.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Principle
5 Reagent
6 Apparatus
11 7 Preparation
7.1 Sampling of test specimen
7.2 Pre-treatment of test specimen
8 Test procedure
8.1 Weighing of aliquot
8.1.1 Determination of weighing amount needed
8.1.2 General weighing procedure
12 8.2 Natural 15N abundance analysis
8.2.1 Instrumentation
8.2.2 General analytical procedure
13 9 Precision
10 Test report
14 Annex A (normative) Identification procedure of organic raw cotton fibres by using stable nitrogen isotope ratios
16 Annex B (informative) Analytical results of cotton fibres of various origin and process stage
18 Bibliography

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BS ISO 20921:2019
$102.76