Preparation of steel substrates before application of paints and related products — Test methods for non-metallic blast-cleaning abrasives — Part 8: Field determination of water-soluble chlorides

This document specifies a field method for the determination of water-soluble chlorides in non-metallic blast-cleaning abrasives. This field method is provided as a kit with all components and premeasured extraction solution. This document differs from ISO 11127-7 in that equal volumes of the sample of abrasive and extraction solution are used for the determination of chloride level in the abrasive. In comparison, ISO 11127-7 uses a weight to volume ratio of abrasive to solvent (deionized water) to extract soluble salts from the abrasive. It is intended for use in the field as compared to ISO 11127-7, which is well suited for use in the laboratory.

Préparation des subjectiles d'acier avant application de peintures et de produits assimilés — Méthodes d'essai pour abrasifs non métalliques destinés à la préparation par projection — Partie 8: Titre manque

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STANDARD 11127-8
First edition
Preparation of steel substrates before
application of paints and related
products — Test methods for non-
metallic blast-cleaning abrasives —
Part 8:
Field determination of water-soluble
Reference number
ISO 11127-8:2020(E)
ISO 2020

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ISO 11127-8:2020(E)

© ISO 2020
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ii © ISO 2020 – All rights reserved

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ISO 11127-8:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Reagent . 1
5 Apparatus . 2
6 Sampling . 2
7 Procedure. 2
8 Confirmation of results . 2
9 Test results . 3
Annex A (informative) International standards for non-metallic blast-cleaning abrasives .4
Bibliography . 5
© ISO 2020 – All rights reserved iii

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ISO 11127-8:2020(E)

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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.
A list of all parts in the ISO 11127 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html
iv © ISO 2020 – All rights reserved

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ISO 11127-8:2020(E)

The use of non-metallic abrasive blast media is common practice for dry and wet surface cleaning and
blasting for substrate preparation prior to coating application. The non-metallic abrasive media are
taken from their natural environment which may contain various soluble salt contaminants including
chloride salts. High chloride salt concentrations in the abrasive blast media may provide for transfer
of the chloride ions to the substrate during the blasting process which would then cause premature
failure of the applied coating.
To limit the risk of contaminating the steel surface from contaminants in the abrasive media, the
chloride levels are quantified with ion specific testing methods that are referenced in this document.
This document provides guidance on analysing specifically for the chloride ion in the presence of other
less / non-corrosive salts such as nitrates and carbonates.
This document is a part of the ISO 11127 series that deals with the sampling and testing of non-metallic
abrasives for blast-cleaning.
The types of non-metallic abrasive and requirements on each are contained in ISO 11126.
The ISO 11126 and ISO 11127 series have been drafted as a coherent set of documents on non-metallic
blast-cleaning abrasives. Information on all parts of both series is given in Annex A.
© ISO 2020 – All right

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