How small do you mean? I think naoh is still available at Lowes building store as reobic drain cleaner. I have gotten 2lb containers of koh and naoh from ebay. Methanol is another story. I went from the little yellow bottles of heet right to a 55 gallon drum of it. I do not know if air brake anti-freeze is pure methanol or not but they come in gallon or half gallon containers.
