Hi Theresa, Your observation of colored crystals under polarising lights seems odd to me. I assume your protein should be colorless and under normal light these crystals are colorless? Are these trays set up in glass plate or plastic plates? If you are willing to upload some pictures, I might be able to tell you whether they are salt crystals or not.
Regards Jingquan On 15 March 2012 15:43, Theresa H. Hsu <theresah...@live.com> wrote: > Hi all. > > I set up some trays of membrane protein remotely in cubic phase. I don't > have ready access to them so I can't shoot/pick the crystals. Under > polarising lights, some crystals appears coloured across many conditions, > making me think these are salt. Is there some knowledge of inorganic > chemistry that be relied to prioritise some for reproductions at my lab? > Can detergents crystallise and produce colours under polarising light? > > Thank you. > > Theresa > >
