ISO 8502-5:2025

Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 5: Measurement of chloride on steel surfaces prepared for painting (ion detection tube method)

This document describes a field test for the measurement of chloride ions using special detection tubes. With suitable surface sampling techniques, this document is applicable to steel surfaces before and after cleaning, as well as to painted surfaces between applications of coats.

Préparation des subjectiles d’acier avant application de peintures et de produits assimilés — Essais pour apprécier la propreté d’une surface — Partie 5: Mesurage des chlorures sur les surfaces d’acier préparées pour la mise en peinture (méthode du tube détecteur d’ions)

General Information

• Status: Published
• Publication Date: 18-Jun-2025
• ICS: 25.220.10 - Surface preparation
• Technical Committee: ISO/TC 35/SC 12 - Preparation of steel substrates before application of paints and related products
• Drafting Committee: ISO/TC 35/SC 12 - Preparation of steel substrates before application of paints and related products
• Current Stage: 6060 - International Standard published
• Start Date: 19-Jun-2025
• Due Date: 13-Jun-2026
• Completion Date: 19-Jun-2025

Relations

• Revises: ISO 8502-5:1998 - Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 5: Measurement of chloride on steel surfaces prepared for painting (ion detection tube method)
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 8502-5
Second edition
Preparation of steel substrates
2025-06
before application of paints and
related products — Tests for the
assessment of surface cleanliness —
Part 5:
Measurement of chloride on steel
surfaces prepared for painting (ion
detection tube method)
Préparation des subjectiles d’acier avant application de peintures
et de produits assimilés — Essais pour apprécier la propreté
d’une surface —
Partie 5: Mesurage des chlorures sur les surfaces d’acier
préparées pour la mise en peinture (méthode du tube détecteur
d’ions)
Reference number
© ISO 2025
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus and materials . 2
5.1 Extraction solvent.2
5.2 Chloride ion detection tube .2
5.2.1 Design . .2
5.2.2 Calibration . . .2
5.3 Cutter .2
5.4 Vessel .2
5.5 Gloves .2
6 Procedure . 2
6.1 Extraction of chloride . .2
6.2 Determination of the chloride concentration in the extract solution .3
6.3 Verification test.3
7 Expression of results . 3
8 Test report . 3

iii
Foreword
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This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12,
Preparation of steel substrates before application of paints and related products, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 8502-5:1998), which has been technically
revised.
The main changes are as follows:
— the procedure for washing the test area has been moved to ISO 8502-2 and replaced with the extraction
of chloride as specified in ISO 8502-6 and ISO 8
...