Can someone supply a reference for the longest UV-C wavelength that will produce ozone by breaking down oxygen in air and possibly information on the action spectrum in this vicinity? Thanks in advance. Robert E. Levin, Ph.D. Corporate Scientist OSRAM SYLVANIA 71 Cherry Hill Drive Beverly, MA 01915 phone: (978) 750-1594 fax: (978) 750-1794 e-mail: robert.levin@sylvania.com