This thread is the result of a comment made in another conversation. Over the years I have come to realise that although a great many people enjoy processing and printing their films they are completely unaware of the risks some of the chemicals used in the darkroom can pose to health. I am not attempting to put people off using photographic processes, or to frighten them. But it is important to treat photographic chemicals with care and respect and not take unnecessary risks. Observing safe practice is essential for those who teach or run classes of any kind. Nobody likes a law suit except a lawyer. The purpose of this thread, then, is to provide advice, information and links to other relevant sites concerning known health risks posed by photographic chemicals, and to promote safe working practices. I would therefore strongly advise everyone to visit these web pages, print them out and read them carefully. http://www.trueart.info/photography.htm http://www.ci.tucson.az.us/arthazards/photo2.html It is a reasonably complete list of chemicals used in photography along with the various health risks they pose. The level of hazard posed by the various chemicals depends upon a number of factors, including age, fitness and general health. The risks are also assessed on the basis that the chemical is undiluted. Even so it is best to err on the side of caution. This page contains some very useful links: http://www.trueart.info/hazards.htm The site itself has lots of other interesting and useful information for artisits.