[alt-photo] Re: potassium phosphate

[David Ashcraft]

Eric, my intent was not to post a formula but that I was going to try  
gold toning.  A chemist I'm not, not even close, those who know me  
might argue the world is a safer place because I'm not.

My fault for assuming that all would know that cooler tones were this  
side of neutral, ya know, the side opposite of warm tone.  As far as  
what gold, what I assumed again is everybody would know gold chloride  
because in my very short time working with pt/pd this was all I've  
heard and know of.  Is there some other kind of gold I should know of?

I know it can be frustrating being around beginners and those who have  
just enough knowledge to make us annoying and other times dangerous.

All I really wanted to know when I posted to the list was; has anybody  
made bluish tone platinum prints and if so how?

Thanks for the info
David

On Jun 30, 2010, at 8:54 PM, EJ Photo wrote:

> This might seem blasphemous to some, but when you all refer to B&S  
> gold and
> the formula on B&S it does neither myself NOR the reader any good  
> without
> going to ... you guessed it B&S web site or reference material. Some  
> of us,
> DO NOT bother with it. This is just to say that a formula given, is  
> much
> easy to refer to than another link or site not actually in the email.
>
> Using the oxalic acid alone as .... ?? the developer?  Yes. How  
> much? well,
> you kind a knew the answer right  :< )  testing. The use of potassium
> carbonate and oxalic acid is what makes potassium oxalate. At a  
> certain
> point the available potassium carbonate is used up, then the extra  
> oxalic
> acid is now acidifying the solution and additional amount in reserve  
> keep
> the paper from allowing it to get to alkaline.
>
> As the developer gets weaker, or less active you give more exposure.  
> More
> exposure can change??? well, moisture in the paper if not sealed  
> well, heat
> of the paper, .. 5% gold what? there are several formulas that one  
> can use
> and in my experience, there can be a difference in color with these  
> formula
> as there can be changes, as a kin to those due to the change from  
> sodium to
> ammonium.
>
> There is a lot of choice when it comes to just how that print gets  
> made. It
> is a lot of fun. Enjoy.
>
>
> Eric Neilsen
> Eric Neilsen Photography
> 4101 Commerce Street, Suite 9
> Dallas, TX 75226
>
> www.ericneilsenphotography.com
> skype me with ejprinter
> www.ericneilsenphotography.com/forum1
> Let's Talk Photography
>
> -----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
> David Ashcraft
> Sent: Wednesday, June 30, 2010 6:53 PM
> To: The alternative photographic processes mailing list
> Subject: [alt-photo] Re: potassium phosphate
>
> My dev is your potassium oxalate with potassium carbonate formula, was
> wondering if using the oxalic acid alone would make any difference?
>
> I have been using a small amt of 5% gold.  Also have on hand the BS
> gold toning kit which I will be mixing up soon and give it a try.
> This all started when I read of the bluish tones with pt and
> visualized my winter pics with that.  Guess I have my work cut out for
> me; will let you know what I find.
>
> David
>
> On Jun 30, 2010, at 10:53 AM, EJ Photo wrote:
>
>> David, Neutral is quite a bit cooler than warm. The difference that
>> I saw
>> with cold bath was less than that shift. Using both may get you
>> closer. The
>> addition of gold can certainly get you cooler yet.
>>
>>
>
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