See:
http://probes.invitrogen.com/

Molecular Probes (recently acquired by Invitrogen)
is the best resource for fluorescent dye information.
On their website, see "The Handbook".
This is an invaluable resource for anyone
working with fluorescently labeled compounds.
These handbook is in its 9th edition and is
exceptionally well referenced.

Bill Flounders
Berkeley Microlab

Vishwanath Somashekar wrote:
> Hi,
> I am trying to pass a liquid with a flourescent dye(rhodamine 6g) to
> get some images using confocal microscopy. But before doing that I
> need to find the right concentration of rhodamine. To do that I am
> using a Xenon lamp with a PIV filter. Both these are parts of an
> inverted Nikon microscope. I would like get some info on Rhodamine 6G.
> Some literature that I can refer to and also some starting
> concentration to work with.