ISO 10101-2-2022 PDF

Full title and description

ISO 10101-2:2022 — Natural gas — Determination of water by the Karl Fischer method — Part 2: Volumetric procedure. Specifies a volumetric Karl Fischer method for measuring water content in natural gas, with volumes referenced to 273.15 K (0 °C) and 101.325 kPa (1 atm).

Abstract

This part of ISO 10101 specifies a volumetric procedure for determination of water content in natural gas. It is applicable to water concentrations in the range 5 mg/m3 to 5 000 mg/m3 and defines the sampling/measurement approach, expression of volumes at reference conditions and the calculation of water content.

General information

• Status: Published
• Publication date: August 2022
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 75.060
• Edition / version: Edition 2 (2022)
• Number of pages: 11

Details above are taken from the ISO bibliographic entry for ISO 10101-2:2022.

Scope

Gives a volumetric Karl Fischer procedure for determination of water in natural gas. Volumes are to be expressed in cubic metres at 273.15 K (0 °C) and 101.325 kPa (1 atm). The method applies to water concentrations from 5 mg/m3 up to 5 000 mg/m3 and is intended for natural gas and other gases that do not react with Karl Fischer reagents.

Key topics and requirements

• Principle: volumetric Karl Fischer titration adapted for gas sampling and absorption cell design.
• Specified sample-handling and gas flow/volume reference conditions (273.15 K, 101.325 kPa).
• Applicable measurement range: 5 mg/m3 to 5 000 mg/m3 water in gas.
• Requirements for apparatus, reagents and calibration of volumetric Karl Fischer systems.
• Calculation procedures to report water content referenced to the specified temperature and pressure.
• Performance and quality considerations for repeatability, uncertainty and method suitability for natural gas analysis.

Key topics summarized from the standard’s scope and abstract.

Typical use and users

Used by analytical laboratories, pipeline and transmission operators, gas producers/suppliers, quality control teams and regulatory bodies for: routine moisture monitoring, custody transfer checks, pipeline integrity assessments and verification of gas quality specifications. Laboratories implementing the standard require Karl Fischer volumetric equipment configured for gaseous samples and procedures for gas sampling and handling.

Related standards

ISO 10101 is a multipart series. ISO 10101-1 provides introductory and general requirements; ISO 10101-3 covers the coulometric Karl Fischer procedure. The 2022 revisions of part 2 and part 3 replace earlier 1993 editions. Users often consult the other parts of ISO 10101 together to select the appropriate Karl Fischer variant (volumetric or coulometric) and to follow the general guidance.

Keywords

natural gas; water determination; moisture measurement; Karl Fischer; volumetric titration; gas analysis; water content; moisture in gas; gas quality; ISO 10101.

FAQ

Q: What is this standard?

A: ISO 10101-2:2022 is the second part of the ISO 10101 series and specifies a volumetric Karl Fischer method for determining water content in natural gas.

Q: What does it cover?

A: It covers the volumetric titration procedure adapted for gas sampling, the required reference conditions for reporting volumes (273.15 K and 101.325 kPa), the applicable concentration range (5–5 000 mg/m3) and associated calculation and quality requirements.

Q: Who typically uses it?

A: Analytical laboratories, gas suppliers and pipeline operators, quality assurance teams and regulators use this standard for routine moisture measurement, specification compliance and pipeline integrity assessments.

Q: Is it current or superseded?

A: Current — ISO 10101-2:2022 (Edition 2) is the published, current edition and replaces the earlier ISO 10101-2:1993 edition.

Q: Is it part of a series?

A: Yes — ISO 10101 is a multipart standard. Part 1 provides introductory/general requirements; Part 2 is the volumetric procedure; Part 3 is the coulometric procedure. The 2022 revisions update the earlier 1993 parts.

Q: What are the key keywords?

A: Natural gas, water content, moisture, Karl Fischer, volumetric titration, coulometric titration, gas analysis, moisture measurement, ISO 10101.