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Pyrogallol Developers
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Kodak D-1, ABC Pyro
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Stock Solution A
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Sodium bisulphite*
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9.8 g
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Pyrogallol
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60 g
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Potassium bromide
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1.1 g
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Water to make
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1000 cc
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Stock Solution B
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Water
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1000 cc
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Sodium sulphite, desiccated
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105 g
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Stock Solution C
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Water
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1000 cc
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Sodium carbonate, monohydrate
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90 g
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Mix fresh before use. For tray development, use 1 part A, B, and C with 7 parts water. For tank development take 9 ounces each of A, B, and C and add water to make 1 gallon.
There are a number of formulas that are nearly identical, including Agfa 45, DuPont 1-D, and Gevaert GD-79. Weston’s variant decreased the carbonate in C by about 25% and tripled the amount of A used when mixing the working solution.
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Kodak D-7, Metol-Pyro
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Stock Solution A
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Water (125° F or 52° C)
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500 ml
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Metol
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7.5 g
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Sodium bisulfite*
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7.5 g
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Pyrogallol
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30 g
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Potassium bromide
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4 g
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Cold water to make
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1 liter
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Stock Solution B
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Water
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1 liter
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Sodium sulfite
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150 g
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Stock Solution C
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Water
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1 liter
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Sodium carbonate, monohydrated
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90 g
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Take 8 ounces each of A, B, and C and add water to make 1 gallon. Agfa 46 and DuPont 2-D are nearly identical.
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Kodak SD-1 Stain Developer
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Water (125° F or 52° C)
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500 cc
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Sodium sulfite
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1.4 g
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Pyrogallol
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2.8 g
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Sodium carbonate
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5.3 g
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Water to make
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1000 cc
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Use undiluted.
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Gevaert G.202 Pyro-Metol
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Stock Solution A
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Water (125° F or 52° C)
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750 cc
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Metol
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4 g
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Potassium metabisulfite
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10 g
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Pyrogallol
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10 g
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Sodium sulfite, desiccated
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50 g
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Potassium bromide
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1 g
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Cold water to make
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1 liter
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Stock Solution B
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Sodium carbonate, monohydrated
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93.6 g
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Water to make
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1 liter
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For normally exposed negatives take equal parts of solutions A and B.
In case of overexposure, increase the quantity of solution A. For underexposures, increase the quantity of solution B. To obtain even softer results, dilute the mixed solutions with 1 or 2 parts water.
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Gevaert G.205, Pyro-Metol-Hydroquinone
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Water (125° F or 52° C)
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750 cc
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Metol
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2 g
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Sodium sulfite, desiccated
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75 g
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Hydroquinone
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8 g
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Sodium carbonate, monohydrated
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58.5 g
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Potassium metabisulfite
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12 g
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Pyrogallol
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8 g
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Potassium bromide
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2 g
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Cold water to make
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1 liter
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For tray development, dilute 1 part stock solution with 4 parts water. For tank development, dilute 1 part stock solution with 9 parts water.
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Gevaert G.213
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Water (125° F or 52° C)
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750 cc
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Pyrogallol
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2.5 g
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Potassium metabisulfite
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2.5 g
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Sodium sulfite, desiccated
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10 g
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Sodium carbonate, monohydrated
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5.8 g
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Cold water to make
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1 liter
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Use undiluted.
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Edwards Pyro-Ammonia Glycerin
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Stock Solution A
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Pyrogallol
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40 g
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Glycerin
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40 cc
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Denatured methyl alcohol
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250 cc
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Stock Solution B
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Potassium bromide
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15 g
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Ammonia
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40 cc
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Glycerin
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40 cc
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Water
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250 cc
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For use mix 1 part A, 1 part B, and 30 parts water. The addition of glycerin tends to give softer negatives.
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Morley Baer Pyro Citric
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A (dry chemical)
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Pyrogallol crystals
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9 g
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Stock Solution B
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Sodium sulfite
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100 g
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Citric acid crystals
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20 g
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Water to make
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64 ounces
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Stock Solution C
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Sodium carbonate, monohydrated
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150 g
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Water to make
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64 ounces
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For use mix 9 grams of A with 9 ounces of B and water to make 90 ounces total solution. Immediately before development add 9 ounces of C.
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Wimberley WD2D
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Stock Solution A
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Water (100° F or 38° C)
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400 ml
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Metol
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1.5 g
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Sodium bisulfite, anhydrous
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5 g
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Pyrogallol
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15 g
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Water to make
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500 ml
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Stock Solution B
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Water
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400 ml
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Sodium carbonate, monohydrated
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22 g
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Water to make
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500 ml
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For use 20ml A and 20ml B to 400ml water. To adjust contrast, vary the amount of solution B--more B gives higher contrast, less B decreases contrast.
The original formula contained benzotriazole, but this was later eliminated to increase contrast and reduce development times.
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PMK (Pyro-Metol-Kodalk)
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Stock Solution A
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Distilled water
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750 cc
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Metol
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10 g
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Sodium bisulfite*
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20 g
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Pyrogallol
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100 g
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EDTA (optional)
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5 g
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Water to make
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1 liter
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Stock Solution B
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Distilled water
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1400 cc
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Sodium metaborate
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600 g
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Water to make
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2 liters
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For use mix 1 part A, plus 2 parts B, plus 100 parts water.
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Rollo Pyro
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Stock Solution A
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Distilled water
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400 ml
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Metol
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7.5 g
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Sodium Bisulfite*
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10 g
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Pyrogallol
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75 g
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Ascorbic acid
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5 g
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EDTA -Na4
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2.5 g
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Water to make
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500 ml
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Stock Solution B
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Distilled water
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950 ml
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Sodium metaborate
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150 g
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Make a working solution by mixing 2 parts A with 8 parts B with 100 parts water. This pyro solution is specially designed as a substitute for PMK and provides even development with tube
processors running at 25 rpm. Developing times range from 5 to 7 minutes.
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W-80
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Water
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600 cc
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Metol
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6 g
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Paraphenylene diamine hydrochloride
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10 g
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Glycin
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5 g
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Pyrogallol
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1 g
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Tri-sodium phosphate (monohydrate)
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2 g
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Water to make
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1 liter
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If anyone has information on developing times for this developer, please write to the webmaster.
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Welborne Piper Formula
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Stock Solution A
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Sodium sulfite
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75 g
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Potassium metabisulfite
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18 g
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Pyrogallol
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18 g
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Water to make
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1 liter
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Stock Solution B
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Sodium carbonate
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55 g
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Water to make
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1 liter
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For soft negatives, mix just before use 1A + 1B + 2 water. For strong negatives, mix 1A + 1B + 1 water.
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TD-3
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Distilled water
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750 ml
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Sodium sulfite
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1 g
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Pyrocatechin
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0.25 g
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Sodium carbonate (anhydrous)
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15 g
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Distilled water to make
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1 liter
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Bill Troop’s developer for Tech-Pan. If greater activity is required, the carbonate may be increased to 20 g. See http://www.photoformulary.com/uploads/01-0065.doc for more information.
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Pyrocatechin Developers
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Pyrocatechin
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Stock Solution A
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Pyrocatechin
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1 g
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Water
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1000 cc
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Stock Solution B
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Potassium carbonate
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200 g
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Water
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1000 cc
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For use, mix 10 parts A with 1 part B.
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Windisch Compensating Formula
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Stock Solution A
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Pyrocatechin
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8 g
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Sodium sulfite
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1.25 g
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Water to make
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100 cc
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Stock Solution B
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Sodium hydroxide
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10 g
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Cold water to make
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100 cc
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For normal use, mix 12 parts A, 7 parts B, and 500 parts water. If the negative material is innately contrasty, use 20 parts A and 5 parts B.
Ansel preferred to mix the B solution at 1% instead of 10% for high-contrast subjects, and he then used 20 parts A and 50 parts B (1% solution) with 500 parts water. Solution B does not keep well, but A keeps very well in a glass bottle with no air.
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Byrd’s Pyro-cat
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Stock Solution A
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Warm water (90° F)
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800 ml
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Sodium sulfite
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18 g
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Pyrocatechin
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120 g
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Water to make
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1 liter
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Stock Solution B
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Cool water (<80° F)
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1 liter
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Sodium hydroxide
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30 g
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For use mix 1 part A with 1 part B with 100 parts water.
Agitate 10 seconds every minute. Starting development times: 68°/17m, 70°/15m, 72°/13.5m, 74°/12.5m, 76°/11.5m, 78°/10.5m, 80°/9.5m, 82°/9m.
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Foma FV-11
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Metol
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3 g
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Sodium sulfite, anhydrous
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45 g
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Sodium carbonate
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30 g
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Pyrocatechin
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6 g
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Water to make
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1 liter
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Dilute 1+1 to 1+5 for use, depending on desired contrast. Approximate development times are 3 minutes at 1+1, 8 minutes at 1+3, and 15 minutes at 1:5.
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Sodium Tribasic Phosphate Formula
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Stock Solution A
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Sodium sulfite
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110 g
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Pyrocatechin
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22 g
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Water to make
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1 liter
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Stock Solution B
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Tri-sodium phosphate
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14 g
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Water to make
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1 liter
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Add 1 part A to 1 part B to 1 part water.
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Herrman’s Fine Grain Developer
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Metol
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9 g
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Pyrocatechin
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9 g
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Sodium sulphite
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60 g
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Sodium carbonate
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60 g
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Water to make
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1 liter
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Dilute 1+9 or 1+19 for use.
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Pextral Two-Bath Formula
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Bath 1
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Pyrocatechin
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1.5 g
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Sodium sulfite, anhydrous
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0.3 g
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Water to make
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300 ml
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Bath 2
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Sodium hydroxide
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6 g
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Water to make
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300 ml
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Process for 2 minutes in Bath 1 and 1 minute in Bath 2 at 20° C.
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Maxim Muir’s Compensating Formula
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Stock Solution A
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Water
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250 ml
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Sodium metabisulfite
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10 g
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Pyrocatechin
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40 g
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Water to make
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500 ml
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Stock Solution B
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Sodium hydroxide
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10 g
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Cold water to make
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100 ml
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For use, mix 2 parts A, 1 part B, and 200 parts water. Solution B does not keep more than a week or so.
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Mimosa No. 3
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Stock Solution A
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Water
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750 ml
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Sodium sulfite, desiccated
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30 g
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Pyrocatechin
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20 g
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Potassium bromide
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0.5 g
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Water to make
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1 liter
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Stock Solution B
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Sodium carbonate, anhydrous
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120 g
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Water to make
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1 liter
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For use, mix 1 part A and 1 part B with 10 parts water.
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One-Shot Formula
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Catechol
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2 g
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Sodium sulphite, anhydrous, 5% sol
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5 ml
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Sodium hydroxide, 5% solution
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10 ml
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Water to make
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1 liter
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Use undiluted. Development time: 15 minutes at 68° F.
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Barry Thornton’s 2-Bath Formula
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Bath A Concentrate
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Pyrocatechin
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10 g
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Sodium sulphite
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2 g
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Potassium bromide
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0.5 g
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Water to make
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100 ml
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Bath B Concentrate
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Potassium hydroxide
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10 g
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Potassium bromide
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0.5 g
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Water to make
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100 ml
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Working solutions of A and B are mixed 1+14 with water. Recommended times are 4 minutes in A at 21° C with agitation once every 30 seconds, followed by 4 minutes in B at 21° C with
agitation once every minute. Do not rinse between baths.
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Pyrocat-HD
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Stock Solution A
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Distilled water
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75 ml
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Sodium metabisulfite
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1 g
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Pyrocatechin
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5.0 g
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Phenidone**
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0.2 g
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Potassium bromide
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0.2 g
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Distilled water to make
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100 ml
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Stock Solution B
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Distilled Water
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70 ml
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Potassium carbonate
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75 g
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Distilled water to make
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100 ml
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To make a standard working solution mix 1 part A with 1 part B with 100 parts water (1:1:100). For greater contrast, double the amount of B (1:2:100).
Solution A keeps for about 6 months in a tightly stoppered brown glass bottle.
** 2.5 grams of Metol may be substituted for the phenidone with a slight loss in film speed but better keeping qualities.
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Perutz OP-004
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Stock Solution 1
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Pyrocatechin
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200 g
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Sodium Sulphite
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50 g
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Water to make
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1 liter
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Stock Solution 2
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Sodium carbonate
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100 g
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Water to make
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1 liter
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For use mix 12 ml Solution 1 with 240 ml Solution 2 and add water to make 1 liter.
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This is a page in progress. I am still collecting staining formulae of all kinds and would welcome suggestions for new formulas. Also, if you find any errors, please let me know.
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Pyro Triethanolamine
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Oxalic acid
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1.8 g
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Potassium metabisulfite
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4.5 g
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Pyrogallol
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54 g
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Metol
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19 g
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Sodium sulfite
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135 g
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Triethanolamine
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140 ml
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Distilled water to make
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4 liters
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Mix 1:1 with distilled water for a working solution.
If you are doing development by inspection, the remaining concentrate can be used as a replenisher for the working solution. When the working solution gets too thick, discard it. Store the concentrate in several small dark glass bottles with no air. Developing times for most films should be between 5 and 10 minutes at 68° F.
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Gainer Triethanolamine
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Pyrogallol
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7 g
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Triethanolamine
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100 ml
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Heat to above boiling point of water to drive off any water that might be in the triethanolamine. Try various dilutions starting with 1+50. 10 to 14 minutes at 70° F. You can
get the triethanolamine at Photographer's Formulary or cheaper at www.chemistrystore.com.
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