Watch the insight on how to conduct the 3 types of water soluble contaminants tests required for the blast and paint industry:
1. ISO 11127-6 Water Soluble Contaminant test (starts at 00:55)
2. ISO 8502-6 Method of Extraction from the Substrate and ISO 8502-9 for Method of Measurement (starts at 04:33)
3. ISO 8502-15 Chloride Ion Specific test (starts at 07:47)
As presented in the 2020 virtual ATG (Applicator Technical Group) Applicator event, AJ Russell (BlastOne) Sara Madavamani (GMA Garnet Group) walk you through the 3 test methods for soluble contaminants in abrasive and on surfaces compliant with recent changes to ISO standards.
To get you up to speed, ISO 8502-9 (Field method for the conductometric determination of water-soluble salts) has previously been a measure of not only chlorides, but all soluble elements on a blasted surface which measures the conductivity of both non-corrosive and corrosive elements.
The review of ISO 8502 (Tests for the assessment of surface cleanliness) aimed to remove confusion on elements that impact coating life and natural elements that have no corrosive impact whatsoever.
The update to ISO 8502 refers to the use of the Ion Detection Tube analysis and Sleeve Extraction methods of measuring chloride ions alone. Test methods such as ISO 8502-5 and the new ISO 8502-15, which provide accurate instructions/results for ion specific contamination, should now be the used as the primary surface preparation test method to ensure optimum coating protection.
How and why did these ISO standards change?
Watch the discussion with Craig Reynolds from BlastOne and Julian Anthony from GMA Garnet Group where they talk through how and why ISO standards have changes in regards to quantifying ‘actual’ Surface Chlorides.