Hi All, I was working in the darkroom the other day and had finished processing some film with a pyro formula. I try to keep a clean area and always wash my hands of any chemical residue. Unfortunately, it seems I wasn't meticulous enough for the next day I discovered that I missed a spot on my upper arm and had stains there. It must have been splashed there during a rinse. Normally, I immediately wash off all chemistry that contacts the skin. I cleaned it off but I was wondering about the toxicity of the overnight contact. Will the arm fall off? Will I turn into a flesh eating zombie? Well, kidding aside, I'm not sure if there is enough to worry about and I'll just remember to be more diligent next time. Any thoughts?