Rationale:
AMS5621H prohibits unauthorized exceptions (3.6, 4.4.3, 5.2.1.1, 8.7), updates composition testing (3.1), adds examination method (3.3.2.4.1), updates quality requirements for bar (3.4), clarifies samples for test (3.3.1, 4.3.3), updates reporting (4.4), adds note on stock removal (8.8), allows prior revisions (8.6), and is the result of a Five-Year Review and update of this specification.
