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In response to the commercial nature of the questions being posted:

CoolLED, a specialist in high-power, cooled LEDs produces the precisExcite 
LED light source which fits on all current microscopes.  We are working 
with most of the microscope manufacturers and imaging software companies 
to complete full software integration which will permit (inter alia)sub-
millisecond switching.  precisExcite currently offers excitation at 400, 
445, 465, 525, 595, and 635nm.

Further information on precisExcite at: www.precisexcite.com

A list of the many benefits of LED systems is available at: 
http://www.coolled.com/precisexcite/precise_des.html

We will be happy to respond to specific questions and pricing information 
off-site.

Jim Beacher
CoolLED
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