This International Standard provides procedures for the laboratory testing of both drilling fluid materials and
drilling fluid physical, chemical and performance properties. It is applicable to both water-based and oil-based
drilling fluids, as well as the base or ¿make-up¿ fluid.
It is not applicable as a detailed manual on drilling fluid control procedures. Recommendations regarding
agitation and testing temperature are presented because the agitation history and temperature have a
profound effect on drilling fluid properties.