RE: Source for Uranium Nitrate
Hi Mark, I hope and assume that you know that Uranium Nitrate is a very toxic substance , it is not so much it's (relative) low radioactivity, but it's toxicity by it self. I used to work with it in a lab enviroment, and the safety officer of our lab told me that uranylnitrate was one of the few compounds on which there was a restriction on the total amount beeing present in the lab. So I do hope that you have the skills and equipment to work with toxic compounds (and the means to dispose the waste). I did some toning on silver gelatine paper (Ilford FB), and that was a rather frustating affair: the toner is capable of beatifull warm, deep red tones, but it shifts easily to a more chestnut warm brown. The biggest problem was the clearing of the whites after toning, this took a long time, bleached the image a bit and shifted the colour. On RC paper the clearing was less of a problem. Good luck, Cor > -----Original Message----- > From: Mark Booth [mailto:boothm@mac.com] > Sent: dinsdag 30 januari 2007 3:15 > To: alt-photo-process-l@usask.ca > Subject: Re: Source for Uranium Nitrate > > Dan, thank you for your recommendation. I will look into American > Elements. I will also contact Michael in reference to his suggestion > to contact Blake Ferris. These sources should work well! > > I appreciate everyone's support!!! > > ~ Mark Booth > > > On Jan 29, 2007, at 5:07 PM, Dan Burkholder wrote: > > > Check this: > > > > http://www.alternativephotography.com/forums/phpBB2/viewtopic.php? > > p=1240&sid=a88b7acc1ec3b1c729418c5adfa3aa8b/ > > > > The actual source is listed as http://www.americanelements.com/ > > > > I have about five grams of the stuff from years ago...but I'm not > > giving > > it away. ;^) Bill Crawford (Keepers of Light) says the colors in > > uranium > > toned pt/pd prints may be fugitive. It is neat that you can get > > different color simply by clearing for varying times. > > > > Hope this helps, > > > > Dan > > > > Mark Booth wrote on 1/29/07, 6:23 PM: > > > >> I am seeking a good source for purchasing Uranium Nitrate for > >> creating > >> a Uranium toner solution. So far I have had trouble finding a > >> source. PF doesn't carry this item and I would suspect that > >> hazardous > >> considerations may be a factor or scarcity. > >> > >> Specific Application: Perhaps there is an alternative toner with > >> similar effects (realizing that considerable differences exist with > >> formulas and applications). My initial use would be with > >> silver-gelatin and then moving to eventual non-silver > >> application. It > >> is said by Robert Schramm, in his excellent but short article > >> regarding Uranium Toning www.unblinkingeye.com to produce red-brown > >> tones on silver prints and blue, green and red tones on platinum > >> prints. If one reads the article, figure #1 image presents a > >> similar > >> effect that I would like to replicate, as much as possible, girl > >> aside! I would be inclined to use Bergger VC NB paper or Silver > >> Supreme paper for a given motive that I have photographed. Then > >> figure #2 toning would be of future interest in other applications. > >> (effects are considerably different on platinum vs. silver as can be > >> seen) > >> > >> Anyone's recommendations or suggestions would be greatly appreciated > >> to this (less experienced) practitioner. I imagine that Tim Rudman's > >> book, The Photographer's Toning Book, would be a good source to > >> review > >> as well! > >> > >> Thanks in advance, > >> Mark Booth > >> > >> > >> > > > > -- > > www.DanBurkholder.com > > www.TinyTutorials.com > >
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