Post by Steaphany on Jul 18, 2013 20:11:18 GMT
From the Amateur Photographic Science Page:
First prepare:
Ansco 70 Stock Solution A
to
add and dissolve
then add
Second prepare:
Ansco 70 Stock Solution B
to
add and dissolve
then add
Prepare:
( Immediately before use )
Ansco 70 Working Solution ( 500 ml )
add and mix
This developer is recommended for PROCESS FILM used in reproduction work. Develop films for 3 minutes at 20ºC.
First prepare:
Ansco 70 Stock Solution A
to
| Warm Water ( ~50ºC ) | CAS # 7732-18-5 | 750 ml |
add and dissolve
| Hydroquinone | CAS # 123-31-9 | 25.0 grams |
| Potassium Metabisulfite | CAS # 16731-55-8 | 25.0 grams |
| Potassium Bromide ( Anhydrous ) | CAS # 7758-02-3 | 25.0 grams |
then add
| Cold Water ( ~20ºC ) | CAS # 7732-18-5 | to make 1,000 ml |
Second prepare:
Ansco 70 Stock Solution B
to
| Cold Water ( ~20ºC ) | CAS # 7732-18-5 | 750 ml |
add and dissolve
| Sodium Hydroxide | CAS # 1310-73-2 | 36.0 grams |
then add
| Cold Water ( ~20ºC ) | CAS # 7732-18-5 | to make 1,000 ml |
Prepare:
( Immediately before use )
Ansco 70 Working Solution ( 500 ml )
add and mix
| Ansco 70 Stock Solution A | 250 ml |
| Ansco 70 Stock Solution B | 250 ml |
This developer is recommended for PROCESS FILM used in reproduction work. Develop films for 3 minutes at 20ºC.