The latest issue of Post-Factory Photography has a very interesting article on a developer formulated by Sandy King as a substitute for PMK. It is based on pyrocatechin and phenidone. Mr. King claims that Pyrocat-HD provides increased film speed, reduced development times, reduced toxicity, more consistent staining action, and no mottling or streaking with reduced agitation. I have contacted Mr. King and he has given me permission to reproduce his formula on my web site. You can find it at http://unblinkingeye.com/Articles/Pyrocat/pyrocat.html. If you test this developer and would care to share your results, I will be happy to publish them.(posted 8922 days ago)Meanwhile, if you haven't heard of Post-Factory Photography, you owe it to yourself to get a subscription--it contains obscure information you won't find anywhere else. Post-Factory Photography is edited by Judy Seigel and published by Post-Factory Press, 61 Morton Street, New York, NY 10014. A four-issue subscription is $24. (Please add $6 for overseas airmail and $10 airmail to the Pacific and Asia.) I don't regard this as a commercial endorsement, as I doubt she has made a cent on the magazine or is even worried about it turning a profit. Post-Factory Photography is a labor of love.