Since the equations and procedures used in the calculator are contained in the published Standard, updates to the Calculator will only serve to improve usability; the underlying calculations will only change when the Standard itself is updated through the regular IAPMO/ANSI Standards Revision process.  Standard revisions of this type occur on an as-needed basis, however generally speaking changes would not occur more frequently than on a bi- or tri-annual basis, if that.

However, when and if the procedures specified in this Standard are revised, the calculator will be revised accordingly and the updated calculator version information will be noted prominently in the data entry section of the calculator.