Problem with skins on drops..

[diane h peapus]

 Stefan Backstrom <stefan at alfa.mbb.ki.se> wrote:

> How do you avoid skins on your vapour diffusion drops ?
> Do you add something ?
> 

   While all systems are different, I found in one system (a soluble
protein) that skins formed if I didn't siliconize the trays while in
another system, siliconizing was not a factor and addition a small 
amount of organic "additive" prevented skins.

   best wishes
   diane h peapus