Hello,

I just mixed myself two aqueous solutions of 0.1% Safranin O and 0.05%
Fast Green.  I keep them in amber glass bottles, away from the light,
since I suspect that they can photobleach.  I was wondering if anybody
knows how long these stains can keep this way - I did not see an
expiratory date on the bottles that the dry dyes came in.  

Thank you for your help.

**********
Jerry Hu
Musculoskeletal Bioengineering Laboratory
Rice University
Department of Bioengineering - MS 142
P.O. Box 1892, Houston, Texas 77251-1892
Tel: (713) 348-6393
Fax: (713) 348-5877
email: ragnarok@rice.edu
**********