RE: Potassium Oxalate recipe

[Eric Neilsen <ejnphoto@sbcglobal.net>]

Bob, I tried it some time back thinking that I had Sodium Carbonate in the
chemistry closet. It has a much lessened ability to hold the result in
solution than Potassium Oxalate. I tried to make it with the same ratio as
Potassium Carbonate and Oxalic acid. I ended up making many more liters than
I had intended. I used it a few times and can't say that I saw anything
remarkable about it. I don't have any notes in front of me as to faster,
slower, etc, but I'd expect it top be a little slower and possibly a bit
grainer. I don't recall running test over various mixture; DOP, and POP
permutations. I did try it a few times with Chrysotypes as well. It does
bubble just like Potassium Carbonate does. 

I can run a quick test today as it still sits in my darkroom in a neat
bucket. : ) 

I think that I'd go with Loris though and just make Sodium Citrate. Citric
Acid is heavily used in food industry so it should be available quite
easily.


Eric


> -----Original Message-----
> From: BOB KISS [mailto:bobkiss@caribsurf.com]
> Sent: Friday, September 22, 2006 8:46 AM
> To: alt-photo-process-l@usask.ca
> Subject: RE: Potassium Oxalate recipe
> 
> OOOPS!  I sent this question before reading all my e-mails.  It was
> already
> asked.  Sorry, but still hoping for an answer.
> *****I am interested in the possibility of making Sodium Oxalate for PT/PD
> printing.
> 		CHEERS!
> 			BOB
> 
>  Please check my website: http://www.bobkiss.com/
> 
> "Live as if you are going to die tomorrow.  Learn as if you are going to
> live forever".  Mahatma Gandhi
> 
> -----Original Message-----
> From: BOB KISS [mailto:bobkiss@caribsurf.com]
> Sent: Friday, September 22, 2006 9:05 AM
> To: alt-photo-process-l@usask.ca
> Subject: RE: Potassium Oxalate recipe
> 
> DEAR ERIC,
>         Has anyone tried Sodium Oxalate as a developer?  It is SO much
> easier for
> me to find Sodium Carbonate and Oxalic acid here in Barbados.  Would it
> work?  If so what "recipe" would you recommend.
>                         CHEERS!
>                                 BOB
> 
>  Please check my website: http://www.bobkiss.com/
> 
> "Live as if you are going to die tomorrow.  Learn as if you are going to
> live forever".  Mahatma Gandhi
> 
> -----Original Message-----
> From: Eric Neilsen [mailto:ejnphoto@sbcglobal.net]
> Sent: Thursday, September 21, 2006 7:26 PM
> To: alt-photo-process-l@usask.ca
> Subject: RE: Potassium Oxalate recipe
> 
> John, 2 lbs of Pot Carb with 1.75 lbs to make 1 gallon of water. 1 lbs =
> 457
> g and 1 gallon = 3.8 l ( top of my head but close enough as it is just POT
> OX).
> 
> Mix you Pot Card into cool distilled water; about 1/2 your total volume.
> SLOWLY  add your Ox Acid as it WILL BUBBLE!!!!.  Add to completion and top
> off with water to make final volume.
> 
> 
> Eric
> 
> 
> > -----Original Message-----
> > From: John Brewer [mailto:john@johnbrewerphotography.com]
> > Sent: Thursday, September 21, 2006 6:23 PM
> > To: Alt list
> > Subject: Potassium Oxalate recipe
> >
> > Hi list
> >
> > Does anyone have a recipe for potassium oxalate (as a Pt/Pd dev) using
> > potassium carbonate and oxalic acid in metric units.
> >
> > Thanks
> >
> > John
> >
> > www.johnbrewerphotography.com
> >
> > Life shrinks or expands in proportion to one's courage. Anaïs Nin.
> >
> >
> >
> 
> 
> 
>