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Normas BSI – AENOR
BS EN ISO 8502-6:2020

BS EN ISO 8502-6:2020

Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness. Extraction of water soluble contaminants for analysis (Bresle method)

Fecha:
2020-05-19 /Definitive
Comité:
STI/21
Equivalencias internacionales:

ENISO 8502-6

ISO 8502-6

Relación con otras normas BSI:

Reemplaza a: BS EN ISO 8502-6:2006

Resumen:

This document specifies a method of extracting, for analysis, water soluble contaminants from a surface by use of flexible cells in the form of adhesive patches or sleeves which can be attached to any surface, regardless of its shape (flat or curved) and its orientation (facing in any direction, including downwards).

The method described is suitable for use in the field to determine the presence of water soluble contaminants before painting or a similar treatment.

This document does not cover the subsequent analysis of the contaminants that have been dissolved. Methods of analysis suitable for field use are described in other parts of ISO 8502.

NOTE

The extraction method might give a false negative or not take all the water-soluble material off the surface because of: a) Soluble materials hiding in the crevices or under folds of metal; b) Soluble materials under corrosion layers, passivation layers produced by corrosion inhibitors, oil, grease, or other non-visible thin films.

Keywords:
Leak tests, Surface properties, Contaminants, Solvent extraction methods, Testing conditions, Surface treatment, Painting, Sampling equipment, Type testing, Surfaces, Steels, Extraction methods of analysis, Test equipment, Cleaning
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