LUMALUX and LUMALUX ECO high pressure sodium lamps offer a reliable light source with high efficacy and long life. with up to 140 lumens per watt (LPW) initial efficacy and excellent lumen maintenance, these lamps deliver consistent light levels throughout their long lifetime. LUMALUX ecologic lamps have identical physical and electrical construction to standard LUMALUX lamps, but with reduced mercury content enabling them to pass the federal TCLP test1 . the combined product offering builds a complete portfolio of the industry's most popular high pressure sodium lamp wattages and configurations. LUMALUX high pressure sodium lamps have a proven history in the marketplace for over 30 years, yet refinements to the technology provide an opportunity to improve performance ratings. as such, many LUMALUX and all LUMALUX ECO lamps are now rated up to 30,000+ hours average life, which is up to a 25 percent improvement over industry standard products. these lamps also feature lead-free glass, bases and manufacturing process, reducing overall environmental impact.