Samuel E. Speer, PE is a principal with Catalyx technologies, LLC, an engineering firm specializing in the design of UV and photocatalytic oxidation (PCO) systems for the purification of air, water, and surfaces. Sam has over 25 years of experience in the implementation of air, water, and wastewater treatment technologies. He has been dedicated to UV and PCO for the past 10 years, receiving US and international patents. He is a registered professional engineer in the State of Delaware. www.catalyxtech.com