EN ISO 11127-6:2011 Preparation of steel substrates before application of paints and related products - Test methods for non-metallic blast-cleaning abrasives - Part 6: Determination of water-soluble contaminants by conductivity measurement has been changed from EN ISO 11127-4:1997 Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 4: Assessment of hardness by a glass slide test ISO 11127-4: 1993.
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