Can somebody tell me how to make an Alcian Yellow solution PH 2,5? And do you have to filter it before use? I already know that 0,2% is the max. but still I get it not dissolved.

And on the histonet archive I read that Alcian Yellow is not made anymore. We still have a lot of it, does it has an expiring date?

Thanks Frouwke

F.J.Kuijpers-Kwant
Dept. Cellular Animal Physiology
University of Nijmegen
Toernooiveld 1 
6525 ED Nijmegen
frouwke@sci.kun.nl 
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