Post by Steaphany on Jul 20, 2013 12:17:57 GMT
From the Amateur Photographic Science Page:
First prepare:
Ansco 79 Stock Solution A
to
add and dissolve
then add
Second prepare:
Ansco 79 Stock Solution B
to
add and dissolve
then add
Prepare:
Ansco 79 Working Solution ( 500 ml )
to
add and mix
This is a standard formula recommended for development of Reprolith and Reprolith Ortho Films. This one-solution formula is recommended for greater convenience. For better keeping quality the two-solution formula is preferred.
Use working solution full strength. Normal Development time: 1 to 3 minutes-at 20ºC.
First prepare:
Ansco 79 Stock Solution A
to
| Warm Water ( ~50ºC ) | CAS # 7732-18-5 | 750 ml |
add and dissolve
| Sodium Sulfite ( Anhydrous ) | CAS # 7757-83-7 | 1.0 gram |
| Paraformaldehyde | CAS # 30525-89-4 | 30.0 grams |
| Potassium Metabisulfite | CAS # 16731-55-8 | 10.5 grams |
then add
| Cold Water ( ~20ºC ) | CAS # 7732-18-5 | to make 1,000 ml |
Second prepare:
Ansco 79 Stock Solution B
to
| Warm Water ( ~50ºC ) | CAS # 7732-18-5 | 750 ml |
add and dissolve
| Sodium Sulfite ( Anhydrous ) | CAS # 7757-83-7 | 120.0 grams |
| Boric Acid crystals | CAS # 10043-35-3 | 30.0 grams |
| Hydroquinone | CAS # 123-31-9 | 90.0 grams |
| Potassium Bromide ( Anhydrous ) | CAS # 7758-02-3 | 6.0 grams |
then add
| Cold Water ( ~20ºC ) | CAS # 7732-18-5 | to make 1,000 ml |
Prepare:
Ansco 79 Working Solution ( 500 ml )
to
| Cold Water ( ~20ºC ) | 375 ml |
add and mix
| Ansco 79 Stock Solution A | 63 ml |
| Ansco 79 Stock Solution B | 63 ml |
This is a standard formula recommended for development of Reprolith and Reprolith Ortho Films. This one-solution formula is recommended for greater convenience. For better keeping quality the two-solution formula is preferred.
Use working solution full strength. Normal Development time: 1 to 3 minutes-at 20ºC.