This European standard specifies a method for determining the consistence of fresh concrete by the slump test. The slump test is sensitive to changes in the consistence of concrete, which correspond to slumps between 10 mm and 210 mm. Beyond these extremes the measurement of slump can be unsuitable and other methods of determining the consistency should be considered. If the slump continues to change over a period of 1 min after de-moulding, the slump test is not suitable as a measure of consistence. The test is not suitable when the maximum size of aggregate in the concrete is greater than 40 mm.