Response to PMK?

PMK developer was developed by Gordon Hutchings. It uses pyro (or pyrogallo or pyrogallic acid) as its primary developing agent. You can buy PMK in packaged dry chemical form or liquid from B&H Photo and from The Photographer's Formulary (http://www.montana.com/formulary/), among other sources. I also highly recommend "The Book of Pyro," written by Gordon Hutchings. I has a wealth of information on using PMK. The Photographer's Formulary offers a package deal with the book and the chemical kit. You can also find the formula published on the web in various places, among them, http://www.jackspcs.com/index.htm and http://unblinkingeye.com/.

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