[alt-photo] Re: clearing pd prints...

[BOB KISS]

DEAR PAUL,

            I don't think sodium sulfite is sufficient to completely clear
pt/pd or pure pd prints.  

            My first bath is always an acid bath:  1% oxalic acid when
developing in Pot Ox dev or 2 % citric acid when developing in Sodium
Citrate dev.

            

*****Please note that hypo clearing agent has both EDTA and Sodium Sulfite
as well as citric acid and a few other chems in it (from the patent
formula).  A number of people think it is only sodium sulfite and that
simply is not true!

            The 2 clearing baths following the acid first clearing bath are
as follows:

1)    EDTA
30 grams

2)    Sodium Sulfite
25 grams

3)    Water to make
1 liter

4)    (source: Pt &Pd Printing-Dick Arentz)

 

*****You must have both the EDTA and the Sulfite especially for pure Pd
prints.

            I found the EDTA to be pretty reasonably priced if bought from
the right supplier and I have found the following at Photog's Formulary.
http://www.photoformulary.com/DesktopModules/StoreProductDetails.aspx?produc
tID=487
<http://www.photoformulary.com/DesktopModules/StoreProductDetails.aspx?produ
ctID=487&tabid=0&tabindex=0&categoryid=0&selection=0&langId=0&Search=EDTA>
&tabid=0&tabindex=0&categoryid=0&selection=0&langId=0&Search=EDTA 

                                    CHEERS!

                                                BOB

            

 

-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org
[mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of
Paul Viapiano
Sent: Saturday, February 27, 2010 5:04 PM
To: The alternative photographic processes mailing list
Subject: [alt-photo] clearing pd prints...

 

Hello all, hope you're having a good weekend (besides all the new of
snowstorms, earthquakes and tsunamis...jeez!)...so this is trivial compared
to all that.

 

Over on APUG there is some discussion of using a 2% sodium sulfite solution
before washing gelatin silver prints (instead of a HCA), is there anyone
here who has used a similar solution when clearing palladium prints. I
normally use Kodak HCA and it works great when clearing images on Fab
EW...could I switch to plain sodium sulfite which is very inexpensive for my
clearing purposes...?

 

Curious...and forgive me that I didn't take the time to search the archives
here, esp if this is a dead horse issue ;-)

 

Paul

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