Unblinking Eye
Developing Times for Kodak Tri X

Ed Buffaloe’s Recommendation for Kodak Tri X Professional

Developer

Dilution

Time

Temperature

E.I.

PMK

1:2:100

11 m

75 F

250

Comments:  120 Roll Film. Agitate for first 30 seconds, then 5 seconds (2 inversions) every 30 seconds thereafter.  For diffusion enlarger.

Robert C. McColloch’s Recommendation for Kodak Tri X Professional

Developer

Dilution

Time

Temperature

E.I.

HC-110

7.3 : 992.7

17.5 m

68 F

160

Comments:  7.3ml HC110 concentrate per liter of water (measured with a veterinarian syringe); agitate till first minute is up, thereafter, 15-seconds each minute.  Based on a Zone VIII negative where logD ≠ 1.3.

Kevin Lyons’ Recommendation for Kodak Tri X Professional

Developer

Dilution

Time

Temperature

E.I.

Rodinal

1:50

10.5 m

70 F

200

Comments:  TXP 320 exposed E.I. 200 using an incident light meter.  3 minute water presoak @ 70 degrees.  60 seconds agitation for first minute and then 10 seconds every minute.  I use a Paterson large tank that holds 5 reels of 120/220 film.  I load the bottom two reels with 220 film, then put three empty reels on top.  I use 40 ml of Rodinal and 2 liters of water for two 220 films, as a one shot developer.

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