Quote Originally Posted by Craig Koshyk

Versene? what the heck is Versene?
I think it is a trade name for a mixture of sodium hydroxide and ETDA. What I can find froma chemical supplier, the ratio is 0.5% sodium hydroxide, 37% ETDA and the rest is water. My guess is the ETDA (chelating agent) is to buffer the solution against metal ions. So if you use distilled water you could probably get away with straight sodium hydroxide. Red Devil Lye is an inexpensive source.

- Mike