[pure-silver] Re: Fwd: Kentona, response from Freestyle Photo

  • From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
  • To: <pure-silver@xxxxxxxxxxxxx>
  • Date: Fri, 5 Dec 2008 07:49:52 -0800
----- Original Message ----- From: "Nicholas O. Lindan" <nolindan@xxxxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, December 05, 2008 7:14 AM
Subject: [pure-silver] Re: Fwd: Kentona, response from Freestyle Photo 



"Elias Roustom" <elroustom@xxxxxxxxx> wrote:

"Oliver Tan" <oliver@xxxxxxxxxxxxxxxxxx> wrote:
> The reason why there are some stains on
> the paper is because Kentmere removed the cadmium
Funny, I thought Cd was removed from photo paper in the mid 90's. 

==
Nicholas O. Lindan
Cleveland Engineering Design, LLC
Cleveland, Ohio 44121
Me also. This answer just does not make sense. AFAIK, cadmium was used mainly as a preservative in the emulsion but may have had a more complex function. We need to hear from someone who is really knowledgible about emulsion chemistry. 

--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx 
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