Is there an eof (neutral) marker for CE that absorbs at 280 nm? Most markers absorb at lower wavelengths, but I'm trying to eliminate non-protein peaks by looking only at 280 nm, but still need an eof marker to get mobilities.
Thanks in advance for any suggestions.

SueC. said:

Is there an eof (neutral) marker for CE that absorbs at 280 nm? Most markers absorb at lower wavelengths, but I'm trying to eliminate non-protein peaks by looking only at 280 nm, but still need an eof marker to get mobilities. Thanks in advance for any suggestions.

May be checking the link below might help, it has a lot of information regarding capillary Electrophorsis:
http://www3.interscience.wiley.com/cgi-bin/abstract/106588657/ABSTRACT

I am not sure that I am understanding your question.
Did you try a specific primary Ab against the eof and then a secondary fluorescent antibody?

SueC. said:

Is there an eof (neutral) marker for CE that absorbs at 280 nm? Most markers absorb at lower wavelengths, but I'm trying to eliminate non-protein peaks by looking only at 280 nm, but still need an eof marker to get mobilities. Thanks in advance for any suggestions.

Benzene, if soluble in your matrix?