[pure-silver] Re: Favorite Print Developer
----- Original Message ----- From: "BOB KISS" <bobkiss@xxxxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Tuesday, September 23, 2008 11:29 AM
Subject: [pure-silver] Re: Favorite Print Developer



DEAR CHARLIE,
I assume you either use print tongs or gloves. You don't put your hands directly in the developer and other solutions do you? If you use tongs or latex/vinyl/nitrile gloves and you STILL get an allergic reaction to Dektol then you should definitely switch to something like the 
Silvergrain stuff.
If you DO put your hands in the solutions, STOP! Use tongs or gloves. Most developing agents are based on Phenols, compounds constructed around the benzene ring. They ALL lodge in your liver and are VERY hard to remove (chellate; sp?). Metol is a bad one for allergies and Kodak has had warnings about it on all if their developer packaging for as long as I have 
used their developers (1961).
CHEERS!
BOB
Probably all developing agents are sensitizers to some degree. The worst seems to be paraphenylenediamine with Metol not far behind. Hydroquinone is also toxic. Tongs are definitely a good idea. I suggest nitrile gloves because many people are sensitive to latex, and beside, nitrile seems to be less permeable to photographic chemicals. The nature of sensitizers is that one can get away with contact for a long period after which the sensitivity develops. PPD and Metol can cause an exima-like rash which, at its worst, can be debilitating. There are other substances in photo solutions that can also cause alergic reactions. One of them are the almost ubiquitious sulfites but some are just sensitive to the alkaline and acid solutions. 

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