Hydroquinone test? Better title!
Is there a quick test to see if my Hydroquinone is still good? I have two 1lb. plastic jars of Kodak Hydroquinone that I know are very old, but don't know exactly how old. One is nearly white yet and the other is slightly darker. I've used all my "fresh bought" store stuff and thought I'd try this before I ordered more. I was just wondering if there is some kind of dip test or something I can use to tell. JohnW