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, if any, associated with its use. It is the responsibility of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (See 6.2.3 for a specific safety warning.)