U of S | Mailing List Archive | alt-photo-process-l | MEANT SODUIUM CITRATE pH question

MEANT SODUIUM CITRATE pH question



DEAR DON,
	I sit corrected.  I DO use Sodium Citrate, NOT Potassium Citrate.
Senior moment!  I was thinking Potassium Oxalate when I was typing Sodium
Citrate.  Sorry!
******So, do others agree that pH 6 to 7 are good for SODIUM citrate PT/PD
Dev?
		CHEERS!
			BOB

-----Original Message-----
From: Don Bryant [mailto:dsbryant@bellsouth.net] 
Sent: Tuesday, March 20, 2007 1:19 PM
To: alt-photo-process-l@usask.ca
Subject: RE: pH question

Bob,

I don't use Potassium Citrate but I use Sodium Citrate for kallitype
printing. For that I adjust pH < 7 and > 6 with citric acid.

Don Bryant
 

-----Original Message-----
From: BOB KISS [mailto:bobkiss@caribsurf.com] 
Sent: Tuesday, March 20, 2007 1:06 PM
To: alt-photo-process-l@usask.ca
Subject: RE: pH question

Anyone???
	CHEERS!
		BOB

-----Original Message-----
From: BOB KISS [mailto:bobkiss@caribsurf.com]
Sent: Tuesday, March 20, 2007 9:17 AM
To: alt-photo-process-l@usask.ca
Subject: pH question

DEAR LIST,
	At what pH should I keep my Potassium Citrate developer for pt/pd?  
	Eric Neilson suggested that I keep my Pot Ox dev at between 5 and
5.5 with small additions of oxalic acid when necessary.  I can add small
amounts of citric acid to my Pot Cit dev but I am hoping to know what the
best aim pH is for best development.
	Thanks in advance...
		CHEERS!
			BOB

 Please check my website: http://www.bobkiss.com/ 

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