AnalyticaChina 2004 (Popularity: )
http://www.analytica-world.com/?id=22509 International trade fair for analysis, biotechnology, diagnostics and laboratory technology, for the second time held for three dayes in China; New International Expo Centre Pudong, Shanghai.
Pittcon (Popularity: )
http://www.pittcon.org Annual Conference on Analytical Chemistry and Spectroscopy. Held each March, in a different city.