Designation achieved using the ISO system for denoting the sulfate resistance of a particular cement. NOTE See ISO 10426-1 for further information.
Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards
Designation achieved under the ISO system for denoting the sulfate resistance of a particular cement.
Source: API SPEC 10A, Specification for Cements and Materials for Well Cementing, Twenty-fourth Edition, December 2010. Global Standards