Thanks. I wonder why an Efficacy of 123 lm/W was chosen? It seems to have been a goal far in advance of the state of the industry. Unfortunate that the requirements omitted any consideration of the chemical emissions of production, or the in-service chemical emissions from the lamp assembly itself. --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .