For use with Technical Pan and Microfilm. This developer gives an effective doubling of film speed. Shoot Technical Pan at ISO 50 to 80.
TO MAKE 250 ml 500 ml 1 Liter START WITH Hot Water (60 C) 75 ml 150 ml 300 ml ADD Sodium Sulfite 1.9 g 3.8 g 7.6 g Hydroquinone 0.3 g 0.6 g 1.2 g Sodium Carbonate 8.7 g 17.4 g 34.8 g Phenidone 2.08 g 4.15 g 8.3 g ADD Water to make 225 ml 450 ml 900 ml Sodium Sulfite 15.15 g 30.3 g 60.6 g ADD Water to Make 250 ml 500 ml 1 Liter Dilute 1 part developer to 15 parts distilled water. Develop film for 11 to 15 minutes @ 68 degrees, agitate for 5 seconds every 3 minutes. DO NOT USE ACID STOP BATH! Chemical reaction may cause pinholes in the emulsion.Use two 30 second rinses with distilled water.
SOLUTION A Hot Water(60 C) 250 ml 500 ml 1 L Metol 2.5 g 5 g 10 g Sodium Sulfite 12.5 g 25 g 50 g SOLUTION B Hot Water (60 degrees C) 250 ml 500 mlL 1 L Sodium Carbonate(dry) 12.5 g 25 g 50 g To mix, add 1 part Solution A , 1 part Solution B and 10 parts water for normal film.
Developing times:
ISO 25-50 films - develop for 6 minutes @ 70 degrees F.
ISO 64-125 films - develop for 8 minutes @ 70 degrees F.
ISO 400 films - develop for 10 minutes @ 70 degrees F.
For Imagelink FS microfilm exposed at ISO 100, - 1:1:60 dilution, develop for 8 minutes @68 degrees F.
For use with Technical Pan film
Hot water (distilled,125 degrees F.) 750 ml Metol 1 g Sodium Sulfite 10 g Sodium Tetraborate (borax) 2 g Boric Acid. 1 g Water (distilled) to make 1000 ml Develop Technical Pan 6 minutes @ 68 degrees. This is a "one-shot" developer, discard after use. Use constant agitation.
Follow manufacturer's instructions for dilution and developing times. Use distilled water with 56 grams of Sodium Sulfite added per liter of working solution to reduce grain size. Similar results are obtained by adding 4 grams of Sodium Ascorbate (vitamin C ) per liter of working solution.