ASABE has initiated a project to revise ANSI/ASAE S396.2, Combine Capacity and Performance Test Procedure. Standard is being revised to clarify wording and to consider the incorporation of new practices for performing loss testing on combine harvesters. ANSI/ASAE S396.2 will also be compared with ISO 8210:1989, Equipment for harvesting -- Combine harvesters -- Test procedure, to determine whether information from the ISO document should be included in S396.