Rigaku MSC PDA-18 Meter Lot Of 2 Good Working X-Ray Diffraction XRF Meter. You are buying both meters. They are both tested and working, the lot included one power supply. FDA Disclaimer The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation and you are a first time buyer, you must verify your status as an authorized purchaser of this item before item(s) can be shipped.