ISO 10101-3:2022
Natural gas — Determination of water by the Karl Fischer method — Part 3: Coulometric procedure
This document specifies a coulometric procedure for the determination of water content by the Karl Fischer method. The method is applicable to natural gas and other gases which do not react with Karl Fischer (KF) reagents.
It applies to water concentrations between 5 mg/m3 and 5 000 mg/m3. Volumes are expressed at temperature of 273,15 K (0 °C) and a pressure of 101,325 kPa (1 atm).
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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 Installation
8.2 Testing the response
8.3 Measurement
8.4 Blank value determination
9 Expression of the results
9.1 Method of calculation
9.2 Measurement uncertainty
10 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 Installation
8.2 Testing the response
8.3 Measurement
8.4 Blank value determination
9 Expression of the results
9.1 Method of calculation
9.2 Measurement uncertainty
10 Test report
Bibliography