HC 110

HC 110 seems to have a upswept curve.

Dilution from EUROPEAN CONCENTRATE (500 1466)240 mL
(1 roll, steel tank)
300 mL
(1 roll, plastic tank)
480 mL
(2 rolls, steel tank)
600 mL
(2 rolls, plastic tank)
A (1:4)48 mL60 mL96 mL120 mL
B (1:9)24 mL30 mL48 mL60 mL
C (1:5.25)38.5 mL48 mL77 mL96 mL
D (1:11.5)21 mL26 mL38.5 mL52 mL
E (1:14)16 mL20 mL32 mL40 mL
F (1:24)9.6 mL*12 mL*19 mL24 mL
G (1:36.5)6.4 mL*8 mL*12.8 mL*16 mL*
H (1:19)12 mL*15 mL*24 mL30 mL

*Be sure to use at least 19.2 mL of European concentrate per 135-36 or 120 roll of film, even if this requires you to put more than the usual amount of liquid in the tank.

Dilutions G and H are unofficial — not described in any Kodak publications. See „Unusual Uses“ below. I use Dilution H as a substitute for Dilution B to give twice the development time.

Dilutions C, D, and E seem to have been designed to match, respectively, the developing times of DK-50, DK-50 1:1, and DK-50 1:2 with sheet film (Carroll, Photographic Lab Handbook, 1979).

With this developer, development time is roughly proportional to dilution. Thus:

Dilution DDevelop 25% longer than with Dilution B
Dilution EDevelop 50% longer than with Dilution B
Dilution FDevelop 2.5 times as long as with Dilution B

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