As presented in the 2020 virtual ATG (Applicator Technical Group) Applicator event, BlastOne sat down with GMA Garnet Group to discuss the upcoming changes to ISO standards. Conversation covers the measurement of surface chlorides by quantifying ‘actual’ Surface Chlorides.
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 moves away from a conductivity test and refers to the Ion Detection Tube analysis and sleeve extraction methods of measuring the 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.
Watch the full discussion with Craig Reynolds from BlastOne and Julian Anthony from GMA Garnet Group.