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CEN Standard Sand EN 196-1 is a silica-based reference aggregate used in cement and mortar testing, produced with standardized particle size distribution and purity. Each batch is washed, sieved into defined size fractions, and processed to low moisture content (≤ 0.2 %). It is used in laboratories to ensure mixture consistency in cement strength, workability, and shrinkage tests. Each bag is packaged at 1350 ± 5 g, and particle size distribution is verified during production.