BS EN 934-6:2019 pdf free.Admixtures for concrete, mortar and grout.Sampling, assessment and verification of the constancy of performance. BS EN 934-6 The sample shall be composed of sub-samples from 6 packages (bags) or if the total number of packages (bags) is less than 6, from all packages (bags). The sub-samples are to be taken from packages (bags) distributed at random...