BS EN 1744-1: Clause 12: Acid soluble sulphate
Celtest are UKAS accredited to perform the acid soluble sulphate test in accordance with clause 12 of BS EN 1744-1. The test involves extracting sulphates from a test portion of the aggregate by dilute hydrochloric acid. The sulphate ion content is determined by gravimetry and expressed as a percentage by mass of the aggregate.
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