I installed the vaporizer and operated it for about 12 hours. When the chamber was empty (only filled once) I went to wipe out the chamber and it was completely calcified. dark circles on the plastic, which were not visible until the complete disassembly. I cleaned it thinking it could build up so quickly every day. I ran another 12 hours and the accumulation was very minimal. Obviously it was returned after prolonged use and repackaged to look like new. I paid full price and bought direct from Revain. The cables were wrapped in plastic and appeared to be completely repackaged but never cleaned after being returned. I threw the box away so I can't go back, but shame on you Revane! It's horrifying to think of who might have used it before and what possible germs might be lurking in what I bought new from the factory.
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