[alt-photo] Re: potassium phosphate

[Jon Reid]

I use it all the time David. I use it typically around room temp  
(~20-23)℃. It's a reasonably subtle difference depending on paper  
but on Arches platine it produces quite a nice tone just warm of  
neutral. I'm wanting to explore Ammonium Citrate for it's alleged  
cooler tones and slightly higher contrast but am having trouble  
sourcing any locally.

I'm also going to explore adding Gold chloride to my mix to explore  
it's tone changing characteristics though I've read arguments for and  
against.

Jon


On 28/06/2010, at 2:55 AM, David Ashcraft wrote:

> Has anyone used potassium phosphate with potassium oxalate as a pt  
> developer?  I want to make pt prints in a cooler tone, any  
> suggestions?
> David
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