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Does anyone know of a listing or published reports showing tested and approved sources of chrome plating? How about for tungsten (class III, 95%, non-ferrous)? How about for GE's Ultem 1000F ? We have an "external comm. device", with "Tissue/Bone/Dentin" contact, with an "A" duration and need to satisfy the basic 3 tests and hope to do it without the expense of a formal lab workup by using alternate use data.