BL350 or BL368? - All UV lamps sold in this webstore are of the RoHS compliant BL368 phosphor variety whenever possible. - With effect from 1/1/2011, the use of BL350 phosphor in the production of new UV lamps was banned, so any lamps still using that variety of phosphor will be replaced with BL368 phosphor lamps once existing stocks are exhausted.