Methyle potassium sulfate - where to get?

[Udo Kraushaar]

Hi,
I am looking for a substance called Methyle potassium sulfate. Actually I 
know, that a company called Hopkin & Williams distributed this stuff, but 
I neither  know the adress of this company nor where else I can get this 
substance. Can anyone give me a hint??

Thanks in advance


U. Kraushaar
----------------------------------------------------------------------------
Udo Kraushaar
Physiology I
University of Freiburg
Germany
e-mail kraushaa at ruf.uni-freiburg.de
fax: +49-761-203-5204