For information about application, please obtain a copy of the BASF Application Guide for Master Top 100 from your local representative.Preparation of the Concrete Concrete for single course monolithic floors should be capable of achieving a 28 day compressive strength of 25MPa, and with no more than 3% air.Concrete should not contain calcium chloride.Master Top 100 is applied as a dry shake over freshly wooden bull floated concrete.