Prepare:
Sodium Hydroxide solution |
| Warm Water ( ~20ºC ) |
|
CAS # 7732-18-5 |
|
100 ml |
| slowly add and dissolve |
| Sodium Hydroxide |
|
CAS # 1310-73-2 |
|
9.5 grams |
Prepare:
Navy Rapid Developer ( NRD-7 ) Working Solution |
| Warm Water ( ~50ºC ) |
|
CAS # 7732-18-5 |
|
300 ml |
| add and dissolve |
Kodak Elon
P-Methylaminophenol Sulfate |
|
CAS # 55-55-0 |
|
6.15 grams |
| Sodium Sulfite ( Anhydrous ) |
|
CAS # 7757-83-7 |
|
26.2 grams |
| Hydroquinone |
|
CAS # 123-31-9 |
|
7.4 grams |
| Sodium Hydroxide solution |
|
|
|
All from prior step |
| Potassium Bromide |
|
CAS # 7758-02-3 |
|
3.7 grams |
| then add |
| Cold Water ( ~20ºC ) |
|
CAS # 7732-18-5 |
|
To make 500 ml |
Development time is 40 seconds at 20ºC with constant agitation. Stop in ordinary stop bath for 5 seconds, optional, but advisable. Immerse in the NRF-5 fixing bath with constant agitation for twice the time the emulsion takes to clear. In general, 30 seconds to 2 minutes in fresh solutions give the most satisfactory results.
References:
|
"Photographer's Mate 2 & 3", Bureau of Naval Personnel, Rate Training Manual, NAVPERS 10355-A, 1971 Edition
|
|
