Dear Bart,

you write:

Does anyone know dyes to color diluted semen blue green red and yellow just for identification of the produced diluted semen?

please define the kind of dyes  needed for you research (p.e.  eosine for red, nigrosine, aniine blue  for blue, malachite green for green, fluoresceine  for yellow or azo dye a.s.o....  or fluorochromes.

Are you using a photometer according to :

file:///home/grezes/Downloads/Minitube%20Photometers%20%E2%80%93%20Precision%20in%20ejaculate%20concentration%20measurement.pdf 

or are you using fluorescence microscopy?

You dilute in what (DMF, DMSO or .....) ?

Good luck

JRG

Dear Jean,

These dyes are used just for visual identification of different batches of diluted semen.

They only give the diluted semen as a product a color.

Probably food dyes.

Regards, Bart

Dear Bart,

thank you for your fast answer. You don't answer my question to your question. Do you want to know the structure of the dye sold in these mini tubes.

In this case, an investigation with TLC and NMR can afford the structure of these sold dyes (Cy is in Landshut (Germany).

You cannot publish the structure of these dyes. After determination of the structure, you can order the dyes (Aldrich/Merck ...) as powder for you own use.

Regards

Jean alias JRG