Post by Steaphany on Jul 2, 2013 2:10:30 GMT
From the Kodak's "Processing Chemicals & Formulas for Black-and-White Photography", J-1 Professional Data Book, 1977:
Prepare:
Kodak DK-50
to
add and dissolve
then add
Clean-working and moderately fast, Kodak DK-50 Developer is extremely popular with commercial and portrait photographers. It can be used with or without dilution, in a tank or tray, to produce crisp-looking negatives from all types of subjects. DK-50 Developer is highly recommended for portraiture.
Development Recommendations: For tank development of portrait negatives, dilute with an equal volume of water; develop about 10 minutes at 20ºC. For tray development, use without dilution; develop about 6 minutes at 20ºC. For commercial work, use without dilution. Develop about 6 minutes in a tank or 4.5 minutes in a tray at 20ºC.
Replenishment: Add 30 ml of KODAK DK-50R Replenisher per 8 x 10-inch ( 20.8 x 25.4-cm ) sheet or equivalent ( 516 square centimeters or 80 square inches ) processed. If the developer is diluted 1:1 for use, the replenisher should be diluted in the same proportion.
The formula for the Kodak DK-50R Replenisher will be in a separate post.
Prepare:
Kodak DK-50
to
| Warm Water ( ~50ºC ) | CAS # 7732-18-5 | 500 ml |
add and dissolve
| Kodak Elon, P-Methylaminophenol Sulfa | CAS # 55-55-0 | 2.5 gram |
| Sodium Sulfite ( Anhydrous ) | CAS # 7757-83-7 | 30.0 grams |
| Hydroquinone | CAS # 123-31-9 | 2.5 grams |
| Sodium Metaborate | CAS # 16800-11-6 | 10.0 grams |
| Potassium Bromide ( Anhydrous ) | CAS # 7758-02-3 | 0.5 grams |
then add
| Cold Water ( ~20ºC ) | CAS # 7732-18-5 | to make 1,000 ml |
Clean-working and moderately fast, Kodak DK-50 Developer is extremely popular with commercial and portrait photographers. It can be used with or without dilution, in a tank or tray, to produce crisp-looking negatives from all types of subjects. DK-50 Developer is highly recommended for portraiture.
Development Recommendations: For tank development of portrait negatives, dilute with an equal volume of water; develop about 10 minutes at 20ºC. For tray development, use without dilution; develop about 6 minutes at 20ºC. For commercial work, use without dilution. Develop about 6 minutes in a tank or 4.5 minutes in a tray at 20ºC.
Replenishment: Add 30 ml of KODAK DK-50R Replenisher per 8 x 10-inch ( 20.8 x 25.4-cm ) sheet or equivalent ( 516 square centimeters or 80 square inches ) processed. If the developer is diluted 1:1 for use, the replenisher should be diluted in the same proportion.
The formula for the Kodak DK-50R Replenisher will be in a separate post.