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#12
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CSI New York developer formula.
"nailer" wrote in message ... it's totally science fiction, it has no relation to any known developer. No, Richard. GC could not give you results for that composition. As fas as I know analytical chemistry - it is BS, there is no method (single) to detect and detrmine all components of a developer in one go. Amen. I was tempted to say it was just made up and should have. I think they just wanted something that looked like a developer formula and listed a bunch of stuff that is found in developers. This is known as poetic license and also keeps anyone from suing them. -- --- Richard Knoppow Los Angeles, CA, USA |
#13
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CSI New York developer formula.
"Richard Knoppow" wrote
I was tempted to say it was just made up and should have. I think they [the CSI TV show] just wanted something that looked like a developer formula To their credit it had some resemblance to reality. To their discredit very, very few things in the show have any connection to reality whatsoever. -- Nicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. To reply, remove spaces: n o lindan at ix . netcom . com Fstop timer - http://www.nolindan.com/da/fstop/index.htm |
#14
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CSI New York developer formula.
"PATRICK GAINER" wrote in message
... Geoffrey S. Mendelson wrote: Last week's CSI New York had the murder leave a clue on a table. The clue was a white residue that some wonder machine analyzied and the formula for it came up on the screen. No explantion was given of what the numbers are. It was a photographic developer. The formula was: (any typos are mine) Hydroquinione 5.91 Phenidone 6.02 Potassium metabisulphite 7.? (obscured) Sodium carbonate 6.42 Sodium hydroxide 6.75 Potassium bromide 7.11 Anyone know what it was? Rodinal maybe? Geoff. Not Rodinal. Rodinal would have shown paraminophenolate, sodium and/or potassium, sulfite and hydroxide ions. The residue of any developer would not likely show the exact compounds that went into it. You probably cannot get the metabisulfite back after it has been dissolved in water and evaporated. Oxidation would have changed things, too. If I had seen that episode, I would probably still be laughing. I don't know many developers that would leave a white powder residue. Now, if it had never been dissolved, maybe. Xtol leaves a white residue, no? Either that or D76, as I've only used three developers, and HC110 is definitely _brown_. -- Regards, Matt Clara www.mattclara.com |
#15
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CSI New York developer formula.
On Mon, 06 Feb 2006 15:28:19 +0000, Matt Clara wrote:
"PATRICK GAINER" wrote in message ... Geoffrey S. Mendelson wrote: Last week's CSI New York had the murder leave a clue on a table. The clue was a white residue that some wonder machine analyzied and the formula for it came up on the screen. No explantion was given of what the numbers are. It was a photographic developer. The formula was: (any typos are mine) Hydroquinione 5.91 Phenidone 6.02 Potassium metabisulphite 7.? (obscured) Sodium carbonate 6.42 Sodium hydroxide 6.75 Potassium bromide 7.11 Anyone know what it was? Rodinal maybe? Geoff. Not Rodinal. Rodinal would have shown paraminophenolate, sodium and/or potassium, sulfite and hydroxide ions. The residue of any developer would not likely show the exact compounds that went into it. You probably cannot get the metabisulfite back after it has been dissolved in water and evaporated. Oxidation would have changed things, too. If I had seen that episode, I would probably still be laughing. I don't know many developers that would leave a white powder residue. Now, if it had never been dissolved, maybe. Xtol leaves a white residue, no? Either that or D76, as I've only used three developers, and HC110 is definitely _brown_. Leaving aside the quite correct notion that residue from a deveoper is not likely to show the individual compoents with any accuracy, it's safe to say that the 'recipe' given is not D-76, since there is no Metol. If one is to assume that the compents listed are correct, it looks similar to two fine-grain P-Q (phenidone-hydroquinone) developers listed in one of my reference books: (1) FX-18 (Crawley, 1961) Dssolve in order: Water (80-100F) 800 cc Sodium Sulfite (Anhyd) 100 g Hydroquinone 6 g Phenidone 0.10 g Borax 2.5 g Sodium Bisulfite 0.35 g Potassium Bromide 1.6 g Water (cold), to make 1000 cc Can be used straight, or at 1:1 and discarded. Use at 68F, for 5.5-9 min stock or 8-13 min at 1:1. (2) (Unnamed but listed as similar to Microphen) Sodium Sulfite (Anhyd) 100 g Hydroquinone 5.0 g Borax 3.0 g Boric Acid 3.5 g Phenidone 0.2 g Potassium Bromide 1.0 g Water to make 1000 cc Use undiluted, average development time at 68F is 7-11 min for medium-speed film. You'll note that the ingredients given on the TV show are rather unlikely, since any developer that contains both hydroquinone and phenidone contains considerably more of the former than the latter. In the FX-18, the P:Q ratio is 1:60, and in the second formula above, it's 1:25. -Brian. |
#16
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CSI New York developer formula.
On Fri, 17 Feb 2006 16:43:10 GMT, "B. Anthony Cutteridge"
wrote: (2) (Unnamed but listed as similar to Microphen) Sodium Sulfite (Anhyd) 100 g Hydroquinone 5.0 g Borax 3.0 g Boric Acid 3.5 g Phenidone 0.2 g Potassium Bromide 1.0 g Water to make 1000 cc Use undiluted, average development time at 68F is 7-11 min for medium-speed film. The similarity to Microphen is in that this brew uses PQ but the amount of Borax and Boric acid are significantly lower. == John - Photographer & Webmaster www.puresilver.org - www.xs750.net |
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