Ensure you have only the best for your office-every batch of Peri Pro Developer and Fixer receives continual quality inspection during production. And because of the developer's superior anti-oxidation properties you won't need to worry about the life of your x-rays-they'll last long after they're taken without fading. Not to mention you'll get the best quality radiographs after using the fixer as it excels at easily cleaning any remaining chemical or residue from the film surface.