For Sale; Wickomar UV-5000 UV water purifier as pictured. I sold two of these back in 2011 to someone planning to use them to purify sap. I didn't list this one because one of the UV lamps has the electrical leads broken and at the time replacement lamps were very expensive. These are now available on Amazon for $50 each with free shipping. Experts say UV purification of sap works and can improve the grade of syrup but problem is that equipment is very expensive. This is a used commercial unit which cost a bundle when it was new but should work as well as new with new lamps. Could be added to a sap pipeline and is rated at 50 gallons per minute. Please do your own research! For most, sugaring is over for this year but it is a good time to plan for next season.