Archived posting to the Leica Users Group, 2005/11/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On 11/29/05 5:02 AM, "Mike Durling" <durling@cox.net> typed: > I'm pretty excited about PC-TEA. This is a developer invented by > Patrick Gainer. I think it was written up in Photo Techniques about a > year ago. > > To make the stock solution: > 90G Vitamin C powder > 2.5G Phenidone > 1L Triethanolamine (TEA) > > The tricky part is that you have to heat up the TEA to dissolve the rest > of the ingredients. TEA is not classified as hazardous and is available > from chemistrystore.com and Photographer's Formulary. > > In use you dilute it 1:50. It contains NO sulfite. There is also no > water in the stock solution so it is not supposed to deterioriate with age. > > I've only done a few tests to establish a development time, which looks > like 8 minutes @ 72F with HP5+ at 1:50. Grain looks extremely fine with > none of the clumping you get with D-76. > > Mike D > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information Better be as the Triethanolamine is $8.80/quart! http://www.chemistrystore.com/triethanolamine.htm But would be worth it to have run a roll of film without the use of water. Who would believe it!!?! Make for a great "trick question". I'm going to make sure I have a vial of Triethanolamine in my holiday stocking hanging off the fireplace this year!!! Says it is a viscous liquid! That might make for an interesting agitation issue. "just shake the heck out it!"!!! "put in paint mixer". "then go have lunch"! Mark Rabiner Photography Portland Oregon http://rabinergroup.com/