Tetenal Ultrafin Plus is there an ryo equivalent?
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From: Lew on 20 Jul 2008 12:21 Is there a published formula for an equivalent to Tetenal Ultrafin Plus? TIA. -- -Lew The workers took the robot for Maria.
From: Keith Tapscott. on 20 Jul 2008 18:48 Lew;742828 Wrote: > Is there a published formula for an equivalent to Tetenal Ultrafin > Plus? > TIA. > > -- > -Lew No, Tetenal don`t publish their formulas. -- Keith Tapscott.
From: Richard Knoppow on 21 Jul 2008 19:21 "Lew" <lew1716(a)optonline.net> wrote in message news:48836608$0$5002$607ed4bc(a)cv.net... > Is there a published formula for an equivalent to Tetenal > Ultrafin Plus? > TIA. > > -- > -Lew The formula is proprietary but check books like Steve Anchell's _Darkroom Cookbook_ because there are sometimes pretty close guesses in them. I can't download the MSDS from the Tetenal site for some reason, perhaps you can. It will not give the formula but will at least give some clue as to the type of developer. In fact, while there are many developing agents and lots of proprietary formulas most developers fall into a few classes and within those classes there is not much difference. Ultrafin is a liquid concentrate so some of the ingredients will be chosen for their capability of being dissolved in high concentrations and there will be some to keep everything in solution. These are not needed when mixing something in lower concentration. If you want to mix your own just to do it the formula for Kodak Xtol is available because its in the patent. This is a very good developer for many films. What exactly is your object in making your own? -- --- Richard Knoppow Los Angeles, CA, USA dickburk(a)ix.netcom.com
From: Lew on 22 Jul 2008 06:49 I always mix my own developers. On the Rolli site there's mention of the combo of one of their films at half its usual iso developed in ultrafin plus. Thought I'd try it out. "Richard Knoppow" <dickburk(a)ix.netcom.com> wrote in message news:t8qdnXZedsfShxjVnZ2dnUVZ_gKdnZ2d(a)earthlink.com... > > "Lew" <lew1716(a)optonline.net> wrote in message > news:48836608$0$5002$607ed4bc(a)cv.net... >> Is there a published formula for an equivalent to Tetenal Ultrafin Plus? >> TIA. >> >> -- >> -Lew > > The formula is proprietary but check books like Steve Anchell's > _Darkroom Cookbook_ because there are sometimes pretty close guesses in > them. I can't download the MSDS from the Tetenal site for some reason, > perhaps you can. It will not give the formula but will at least give some > clue as to the type of developer. > In fact, while there are many developing agents and lots of proprietary > formulas most developers fall into a few classes and within those classes > there is not much difference. Ultrafin is a liquid concentrate so some of > the ingredients will be chosen for their capability of being dissolved in > high concentrations and there will be some to keep everything in solution. > These are not needed when mixing something in lower concentration. > If you want to mix your own just to do it the formula for Kodak Xtol is > available because its in the patent. This is a very good developer for > many films. > What exactly is your object in making your own? > > > -- > --- > Richard Knoppow > Los Angeles, CA, USA > dickburk(a)ix.netcom.com >
From: Jean-David Beyer on 22 Jul 2008 06:59
Lew wrote: > I always mix my own developers. On the Rolli site there's mention of the > combo of one of their films at half its usual iso developed in ultrafin > plus. Thought I'd try it out. Go ahead (seriously). I used to mix up a lot of different developers to try them out, too. But now the only one I mix is my own version of D-72 (for paper) because I do not like the color I used to get with Dektol or straight D-72. The only difference is my use of benzotriazole instead of potassium bromide as restrainer. I am reminded of something I believe Kenneth Mees once said about developers (probably film developers. I cannot quote exactly, but it went to the effect that it was amazing how many ways there were by which identical results could be obtained. -- .~. Jean-David Beyer Registered Linux User 85642. /V\ PGP-Key: 9A2FC99A Registered Machine 241939. /( )\ Shrewsbury, New Jersey http://counter.li.org ^^-^^ 06:55:01 up 1 day, 11:43, 4 users, load average: 4.51, 4.22, 4.12 |