phil_smith4 Posted October 19, 2005 Share Posted October 19, 2005 Hi, I do alot of fixed line photographic work and you can no longer get the photographic 2- part eradicator kits. Does anyone know the formula used in the Kodak or Michlin products? There is a company in England selling a kit from a kodak recipe but being in the USA I'd rather not have to order from overseas. Thanks, Phil. Link to comment Share on other sites More sharing options...
conrad_hoffman Posted October 20, 2005 Share Posted October 20, 2005 Ok, I gotta ask, what is photographic eradicator? Link to comment Share on other sites More sharing options...
fpa Posted October 21, 2005 Share Posted October 21, 2005 Kodak Management. Link to comment Share on other sites More sharing options...
phillip_smith Posted April 13, 2007 Share Posted April 13, 2007 Well I eventually answered my own question. I used a MSDS sheet from a former supplier to reconstruct a recipe. I dont know if anyone else in the world will ever need this but I will put it here in the forums for posterity.<p> Photo eradicator Part A basically converts the black silver on a litho type film/neg to a white silver salt and then Part B disolves the white salt leaving your film unblemished. We use it to erase lines, etc. on Architectural Drawings and other things that we put on fixed- line mylar like Agfa's PM12.<p> Photo Eradicator<p> Part A<br> 750ml distilled H20<br> 50ml Muriatic Acid<br> 90 Grams Ammonium Chloride<br> 110 grams Cupric Chloride<br> water to make 1 litre<p> Part B<br> 950ml distilled H20<br> 50grams Thiourea<br> water to make 1 litre<p> Thiourea is a carcinogen. We had to set up an account with the supplier before then would send it to us. I think the other stuff is pretty common.<p> I put this in 1oz. dropper bottles so I can just squeeze out a drop where I need it.<p> As soon as you put the Green (Part A) solution on the silver it will turn white. Its instantaneous. Wipe that off with a damp cloth and put the Clear (Part B) on any silver that turned white and it will dissolve instantly. Wipe that good with a damp cloth and make sure you get any traces of the chemical off the base material, then just let it dry.<p> Dont know if anyone will ever use this besides me but who knows. Link to comment Share on other sites More sharing options...
phillip_smith Posted April 13, 2007 Share Posted April 13, 2007 Ooops, change that Thiourea to 10grams, not 50. Link to comment Share on other sites More sharing options...
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