Re: My first platinum prints - and I'm hooked
the how-to: The full and correct method: http://home.att.net/~jdmestra/guide/FO_powder.pdf an abbreviated, subject 2 error, method: http://e.neilsen.home.att.net/FerricOxalate.html .. by the way, what are the CAS nums you are using in your formulation? Richard -- doing some X's with "other" Oxalates now... more when finished --- On Fri, 8/1/08, Edward Draper <ercdraper@gmail.com> wrote: > From: Edward Draper <ercdraper@gmail.com> > Subject: My first platinum prints - and I'm hooked > To: alt-photo-process-l@usask.ca > Date: Friday, August 1, 2008, 9:19 AM > Hello there from sunny London > > I've just done my first ever batch of platinum prints > and I am very pleased > with them. > > However, there are two major problems > > 1) the expense of importing kits from Bostick and Sullivan > - Santa Fe to > London is not cheap > 2) The blacks are not as black as I've seen in other > platinum prints > > I have been told that Solutions A and B should be saturated > with oxalic acid > - to the point where there is a permanent residue at the > bottom of the > bottle > > Has anyone else had experience of this? > > So... > > I've decided to mix my own solutions. > > I've worked through the suppliers here in the UK and > [found the CAS no. for > all the substances] > > There is one major problem - ferric oxalate. I can get it > but it is very > expensive - I'm assured that I can make my own quite > easily > > But I can get hold of ammonium ferric oxalate at a fraction > of the cost > > I see that this can be used as a substitute > > Does anyone have a recipe based on ammonium ferric oxalate? > > > > Thanks a million > > Edward (soon to be poor) Draper
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