I would guess that a chemical lab supply house would have them. Try the Yellow Pages or get in touch with someone at a local college to see who supplies them. I know that for my model railroad painting needs I required distilled water and found it at a local drugstore. Was it 3X distilled or not, who knows. It worked fine with acrylics though. Home brewed D-3 fluid heh? What will they think of next. Good day.
