EN ISO 23168:2020 PDF

Name: EN ISO 23168:2020 — Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)
SKU: EN ISO 23168:2020
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Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)

Название (английский):

EN ISO 23168:2020

Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 2 декабря 2020 г.
Издание:: CEN EN 23168 edition 1 version 1
ICS:: 87.040

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Описание (английский):

This document specifies a method for the determination of the water content of water-borne coating materials and their raw materials by using a gas chromatograph. The preferred working range of this test method is from a water mass fraction of 15 % to a water mass fraction of 90 % but the method can be applied outside of this range.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 23168:2020 - Paints and varnishes: Determination of water content - Gas‑chromatographic method (ISO 23168:2019) specifies a laboratory procedure to determine the water mass fraction in water‑borne coatings and their raw materials using gas chromatography (GC). The method uses an internal standard, dilution with organic solvent, chromatographic separation and detection (thermoconductivity detector) to quantify water. The preferred working range is 15% to 90% water mass fraction, but the procedure can be applied outside this range.

Key topics and technical requirements

Principle: Internal standardisation, dilution, GC separation of water, detection by a thermoconductivity detector (TCD) and quantification from peak areas.

Apparatus: Requirements for the gas chromatograph, variable‑temperature injection block with a sample splitter, oven capable of 40–300 °C, capillary column, silanized glass wool in the splitter to retain non‑volatile constituents, suitable injection syringe, carrier gas and filters.

Sample handling: Guidance on sampling, sample vials, molecular sieves, and bottle‑top dispensers to avoid contamination and water loss.

Reagents and calibration: Use of anhydrous internal standard, appropriate dilution solvent, and consideration of water content in the solvent; calibration procedures and quantitative determination steps are specified.

Performance and quality: The standard includes requirements for data processing, precision assessment (repeatability and reproducibility limits), test reporting and example GC conditions (informative annexes).

Applications and practical value

Quality control of water-borne paints and varnishes during manufacture, formulation and incoming raw‑material inspection.

R&D and formulation laboratories assessing moisture content for process control, stability studies and troubleshooting (e.g., film formation issues, storage stability).

Regulatory compliance and specification verification where documented, reproducible water measurements are required.

Complementary or alternative method to Karl Fischer titration for systems where GC is advantageous (e.g., when volatile organics are present) - users should consider method applicability and intercomparisons.

Related standards

ISO 760 - Determination of water (Karl Fischer method)

ISO 1513 - Sample preparation for paints and varnishes

ISO 3696 - Water for analytical laboratory use

ISO 4618 - Terms and definitions for paints and varnishes

ISO 15528 - Sampling of paints and raw materials

Keywords: EN ISO 23168:2020, gas chromatography, water content determination, paints and varnishes, water‑borne coatings, thermoconductivity detector, internal standard, QC method.

EN ISO 23168:2020 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and practical value

Who should use this standard

Related standards

Технические детали

ISO 23168:2019

Paints and varnishes — Determination of water content — Gas-chromatographic method

SIST ISO 760:1995

Determination of water -- Karl Fischer method (General method)

SIST EN ISO 15138:2018

Petroleum and natural gas industries - Offshore production installations - Heating, ventilation and air-condi…

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

SIST EN ISO 4618:2023

Paints and varnishes - Vocabulary (ISO 4618:2023)

BS EN ISO 15528:2020

Paints, varnishes and raw materials for paints and varnishes. Sampling.