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Calculation periods
BS EN 50491-4-1 on the functional safety of HBES and BACS is useful for:
“binder course” and “surface course” are used throughout this standard in place of the traditional terms “roadbase”
1 on method for the determination of mean relative molecular mass of technical straight-chain sodium alkylbenzenesulfonates is useful for:
Railway rolling stocks manufacturers
Surface active agents. Preparation of water with known calcium and magnesium hardness Ingestion-build-232773 Calculation periods1 Scope This European Standard specifies a method of preparing water of known calcium and magnesium hardness for use in testing surface active agents and products containing them.
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