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SSH EN ISO 8502-2:2005

Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 2: Laboratory determination of chloride on cleaned surfaces (ISO 8502-2:2005)

Dec 29, 2006
95.99 Withdrawal of Standard   Dec 7, 2017

General information

95.99     Dec 7, 2017

DPS

DPS/KT 298

European Norm

25.220.10  

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Scope

ISO 8502-2:2005 describes a method for the determination of chloride-containing salts that are readily soluble in water and are present on a steel surface. The method is also applicable to previously coated surfaces. It will normally be used in a laboratory using washings sampled from surfaces on site.
ISO 8502-2:2005 is applicable to the determination of salts that have been deposited on the steel surface before, during or after the cleaning operations.
ISO 8502-2:2005 is not applicable to surfaces treated with chromate, nitrite or amine, which are commonly used as inhibitors in the water when wet blast-cleaning. This is because a chromate concentration of 10 mg/l or greater or a nitrite concentration of 20 mg/l or greater in the wash water interferes with the determination of the chloride. Also the amine inhibitors can form a hydroxide boundary layer (not water soluble) over the substrate and prevent the water from contacting the underlying salt for its removal. An iron(III) ion concentration of 10 mg/l also interferes with the determination, but the iron(III) ions are concentrated in the rust deposits, which are removed from the test solution by filtration.

Life cycle

NOW

WITHDRAWN
SSH EN ISO 8502-2:2005
95.99 Withdrawal of Standard
Dec 7, 2017

REVISED BY

PUBLISHED
SSH EN ISO 8502-2:2017

Related project

Adopted from EN ISO 8502-2:2005