KB stands for "kleinbild" and "R" for rollfilm.(posted 8589 days ago)Efke KB/R 100 in Rodinal 1+50 4½ - 5 minutes at 68 F (20 C)
Efke KB/R 100 in Agfa 8, 10 minutes at 68 F (20 C)
Efke KB/R 100 in Agfa 14, 9½ minutes at 68 F (20 C)
Efke KB/R 100 in D-76, 9 min at 68 F (20 C)
Efke KB/R 50 in Agfa 14, 6½ - 7 minutes at 68 F (20 C)
Efke KB/R 50 in D-76, 8 minutes at 68 F (20 C)
Efke KB/R 25 in D-76, 8 minutes at 68 F (20 C)