VWR International is a global leaer in the distribution of research laboratory products, with over 1,200,000 items to more than 250,000 customers in North America and Europe. The U.S. division is headquartered in West Chester, Pennsylvania. VWR ranked #91 in 2006, and #77 in 2005, in Forbes list of largest American private companies. Suppliers include Applied Scientific, Carl Zeiss, Duracell, Kimberly-Clark, Bel-Art Products, and Welch Allyn. VWR primarily serves the government, biotechnology, life science, education, electronics and pharmaceutical sectors.