RE: potassium vs. ammonium citrate pd developer

And also has a different contrast than Pot Ox.

Eric Neilsen Photography

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  _____

From: Loris Medici [mailto:mail@loris.medici.name]
Sent: Monday, April 10, 2006 8:47 AM
To: alt-photo-process-l@usask.ca
Subject: RE: potassium vs. ammonium citrate pd developer

Anyone who's capable of mixing a couple of compounds without being provided
information on proper working procedures, solution strenghts, necessary
materials / supplies / equipment and safety precautions, and doing this by
disregarding any warning - such as the one in my message -, is perfectly
capable of harming him/herself and others without my / your / our help, even
without "playing" with chemicals (I mean in much more creative ways). Be
assured...

The question about citrates -> that should be asked to those who use them (I
don't use developers for pt/pd - I work with a POP process). FWIW, it's said
that Ammonium Citrate gives more neutral color.

-----Original Message-----
From: TERRYAKING@aol.com [mailto:TERRYAKING@aol.com]
Sent: 10 Nisan 2006 Pazartesi 16:22
To: alt-photo-process-l@usask.ca
Subject: Re: potassium vs. ammonium citrate pd developer

In a message dated 10/4/06 11:54:29 am, mail@loris.medici.name writes:

Terry, don't panic... I know very well that mixing ammonia and citric acid
will form ammonium citrate

Loris

It is a reasonable assumption that you know.

The danger is that students of whatever age assume that because they see
'teacher' just mixing a coiuple of things together, it can work just as well
with other chemicals.

I suppose the danger can be increased when the 'experts' are on line and not
in the studio or lab to supervise.

Incidentally, what do these citrates do that potassium oxalate does not ?

Terry.
Received on Mon Apr 10 08:03:36 2006