RE: Ferric Oxalate or Ferric Ammonium Oxalate
Hi Kerik, Main salt: Li2PdCl4. Metal additives (for color control - sometimes): K2PtCl4 and KAuCl4. Non-metal additives: NaOW and Amm.Di. (for contrast and color control). Regards, Loris. P.S. Your "reply-to" address is not empty, so I had to write the group's address manually. -----Original Message----- From: Kerik [mailto:kerik@kerik.com] Sent: 03 Kasım 2006 Cuma 08:24 To: alt-photo-process-l@usask.ca Subject: RE: Ferric Oxalate or Ferric Ammonium Oxalate Loris, Which metal salts are you using with AFO? Thanks, Kerik > -----Original Message----- > From: Loris Medici [mailto:mail@loris.medici.name] > Sent: Thursday, November 02, 2006 10:10 PM > To: alt-photo-process-l@usask.ca > Subject: RE: Ferric Oxalate or Ferric Ammonium Oxalate > > Hi Eric, > > I haven't done prints with FO other than few Kallitype tests > so I can't share personal experience w/ it as a sensitizer > for Pt/Pd salts but I'm quite sure that my prints don't > exhibit any haze and/or highlight fogging and/or low > contrast. Probably yours is a paper/clearing and/or negative > DR problem - my usual coating mix gives me 29 steps in the > 31-step tablet for instance (in other words my usual negative > DR is log 2.9!). > > I'm currently using the same AFO sensitizer that I mixed > about 10 months ago and it still works well without any > fogging and/or speed change or other negative effect. IME AFO > is quite stable even when in solution - you can almost think > that it keeps indefinitely "especially when compared to FO". > > Regards, > Loris.
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