[alt-photo] Re: mixing platinum in stainless steel container

[BOB KISS]

DEAR CHRIS,
	Yes, it's da trute!  Many years ago, one of the chemists at the
local National Standards Lab gave me a shiny new stainless steel chem
spatula.  Though all of my pt/pd reading and mentors had told me NOT to use
stainless in the pt soln, I was busy mixing away all of the other solns and,
after washing and drying the spatula, got some pt soln on it.  It tarnished
immediately.  I had to burnish it with emery cloth to clean it.  
	I have always used glass or Teflon when working with pt solns from
that point on.
		CHEERS!
			BOB

-----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
Christina Anderson
Sent: Tuesday, August 31, 2010 9:46 AM
To: Alt List
Subject: [alt-photo] mixing platinum in stainless steel container

Dear All,
Well, start to a new school year and I am never fully ready.
I was going through old magazine articles preparing for class and came
across a funny article from Darkroom Photography (1987) where photographers
shared their darkroom nightmares. In there, George Tice shared a story about
mixing platinum in a stainless steel tank, and that the chemistry reacted
with the iron in the stainless stell and not only badly pitted the stainless
steel tank but also he had to have a chemist remove the iron chemically from
the platinum solution to salvage it.

George Tice is an inveterate platinum printer. I have not heard this. I was
wondering if anyone else has experienced this?
Chris

Christina Z. Anderson
christinaZanderson.com

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