1.1 The amount of water used in a castable has a significant influence on its performance. This practice covers the procedures for determining the consistency of a castable using the Ball-in-Hand Test.1.2 This practice applies to regular weight castable refractories and insulating castable refractories which are described in Classification C 401. It also applies to such castables containing metal fibers.1.3 This standard does not purport to address all of the safety concerns,