Kodak DK-50

Water @ 125F
Elon
Sodium Sulfite
Hydroquinone
Sod. metaborate
Pot. Bromide
Water to make
750ml
2.5g
30g
2.5g
10g
0.5g
1.0L
Dissolve chemicals in the order given. For tank development of portrait negatives, dilute with an equal volume of water; develop about 9 min. @ 68 degrees F. For tray development, use without dilution. develop about 5 min. @ 68 degrees F.