Hi,

You can purchase fluorescent microspheres from DUKE SCIENTIFIC. I do not
have their address or phone in the US, but their European rep is
Distrilab in Amersfoort, The Netherlands. Contact Albert van Nierop, you
can reach him by e-mail at . The spheres are available in
a sizes ranging from 0.025 micron to about 5 micron and several
different colours. Good luck!

Regards
--
Yit-shun Leung Ki
Graduate Student in Microfluidics
_______________________________________________________________
Institute of Microsystems (IMS)
Dept. of Microengineering,
Batîment BM,
Swiss Federal Inst. of Tech. (EPFL),    TEL: +41 21 693 7818
CH-1015 Lausanne                        FAX: +41 21 693 5950
Switzerland                             URL: dmtwww.epfl.ch/ims