ISO 16632:2021
Tobacco and tobacco products — Determination of water content — Gas-chromatographic method
This document specifies a gas-chromatographic (GC) method for the determination of water content. It is applicable to raw tobacco as well as tobacco taken from finished products. The method is suitable for water contents ranging at least from a mass fraction of 2 % to 55 %.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
8.1 Sample handling
8.2 Sample preparation
8.3 Setting up the apparatus
8.4 Calibration of the gas chromatograph
8.4.1 Procedure
8.4.2 Blank test
8.4.3 Determination
9 Expression of results
10 Repeatability and reproducibility
11 Alternative gas-chromatographic procedures and analysis precautions
11.1 General
11.2 Alternative columns
11.2.1 Packed column
11.2.2 Capillary column
12 Test report
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
8.1 Sample handling
8.2 Sample preparation
8.3 Setting up the apparatus
8.4 Calibration of the gas chromatograph
8.4.1 Procedure
8.4.2 Blank test
8.4.3 Determination
9 Expression of results
10 Repeatability and reproducibility
11 Alternative gas-chromatographic procedures and analysis precautions
11.1 General
11.2 Alternative columns
11.2.1 Packed column
11.2.2 Capillary column
12 Test report
Bibliography