Re: POP gold toning was Re: To: alt-photo-process-l@sask.usask.ca

[Sandy King <sanking@clemson.edu>]

When I first started working with toners with POP, salted paper and 
kallitype I wasted a lot of money by mixing liter batches of the 
toner. Most formulas worked great on the first print or two, but 
sporadically afterwards, especially if any time elapsed.

Eventually I settled on a very simple toner that has worked well for 
me, with both gold and platinum toning,  with POP, salted paper and 
kallitype, *when used before fixing*. It is made by mixing 5g of 
citric acid in one liter of water, with either 25ml of 1% gold 
chloride or 5ml of the B&S Potassium chloroplatinate #3 solution. 
However, even this formula exhausted quickly until I started to mix 
just enough to tone a print, using a one-shot approach. The amount 
you will need  will vary according to process but what I have found 
is that about 200ml of solution is more than enough to fully tone a 
12X20 print with salted paper and kallitype. Full toning is achieved 
in about 3-4 minutes. Mix less for smaller prints. A POP will tone 
with the same amount but it take much longer, 5-10 minutes.

To tone, use a flat bottom tray and agitate constantly for the entire 
period of toning.


Sandy King






>Thanks all for the information. I made too much toner for my original
>purposes (I'd like to print negatives fairly soon after I make 'em) and I
>did the entire litre following one of the many packet of instructions in the
>"Tester Kit." Once made I noticed that the instructions in the bag that held
>the 'a' and 'b' solutions recommended only making 1/2 as much... I was
>hoping that I'd not have to throw so much chemistry down the drain. We'll
>see, I suppose.
>
>Experimentation is what this is all about, right?
>
>JD
>----- Original Message -----
>From: "epona" <acolyta@napc.com>
>To: <alt-photo-process-l@sask.usask.ca>
>Sent: Thursday, May 30, 2002 8:58 AM
>Subject: POP gold toning was Re: To: alt-photo-process-l@sask.usask.ca
>
>
>>  Also, tinformation I received from Chicago Albumen Works states that you
>can
>>  use old ammonium thiocyanate/gold toner to make a fresh batch the next
>time you
>>  tone.  You substitute 450 ml in place of water.  They also state to *not*
>>  follow this practice for alkaline (borax) gold toners.  There is a
>description
>>  of this in more detail on their web site, http://www.albumenworks.com.
>>
>>  Cheers,
>>  Christine
>>
>>  Shannon Stoney wrote:
>>
>>  > > I've just started processing POP as a way of getting into alternative
>>  > > processing, the eventual goal is to be able to make daguerreotypes; my
>>  > > question- how long does the gold chloride/ammonium thiocyanate combo
>last
>>  > > once mixed? I see that the two individually last at least as long as
>the
>>  > > toner, but does the mixture decompose?
>>  >
>>  > My experience is that it doesn't last.  You make up enough for that
>printing
>>  > session and then throw it away.  Also, you have to renew it by adding a
>>  > little more gold and ammonium thiocyanate after a few prints.  The paper
>I
>>  > got had directions for how to do this.
>>  >
>>  > This is a problem for POP prints I think, as the gold toner is rather
>>  > expensive.
>>  >
>>  > --shannon
>>
>>  --
>>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>  "The most beautiful thing we can experience is the mysterious.
>>  It is the source of all true art and science.  He to whom this
>>  emotion is a stranger, who can no longer pause to wonder and
>>  stand rapt in awe, is as good as dead; his eyes are closed."
>>  -Albert Einstein
>>
>>
>>


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