In using Amidol I find that fresh chemistry gives a really nice print. I make amidol print developer & have used fresh, old, really old and the RED version... a fresh mix but red in color in solution.(posted 8246 days ago)All work with the fresh stuff being better than any of the others in my darkroom.
Since others also have the red amidol it appears that all Amidol is not equal.
If we are ordering some, what do we look for? Amidol is apparently also used in the food & hair dye industry. Are we OK finding a hair dye chemistry supplier & purchasing Amidol from them or is their version different from what we need for photo processing? The red stuff develops fine but turns fix pink & leaves a pink/warm coloring to the paper when we use it, something none of the old stuff I have & use does. Do I go anywhere and just ask for Amidol & come up with yet another variation in color? Or, do I ask for something specific & how can I be sure I get what I want?