Ask how many hours it has on it. Usually a medical unit is serviced regularly, and for $100 I would jump on it. Your Alpha would be happier with a second one, but I bet it will work just fine on one. I know my Bobcat did for many years until I upgraded.
Also see if it runs. Purity would be the unknown factor. I don't know of a way to test that.
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Kathy
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