HC-110 dilution B dev times at different temps?

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Anyone know dev times for tri-x 400 in hc-110 at temperatures other than 20c. I'm in Mexico City and water's coming out of the taps at 21 to 25c. It says 7.5 mins/dilution B/20c on the film box. I know about ice and all that, but I don't have time in the evenings to mess around with bain maries, ice, aquarium heaters and what-not. Similar info on t-max 3200 taken at 400, 800 and 1600 would be useful too. Is there any reason why developing at slightly higher temps with adjusted times is a really bad idea?

Much appreciated - Greg

-- Greg Brosnan (gbrosnan@infosel.net.mx), May 18, 1999

Answers

Try www.kodak.com all of this information is there.

-- Jeff White (zonie@computer-concepts.com), May 18, 1999.

It's about half a minute less for 1 degree warmer for Tri-X, as well as for T-max films. Buy the Black&White Darkroom Guide from Kodak, it's very useful!

-- Lot (lotw@wxs.nl), May 19, 1999.

It's half a minute less for 1 degree warmer for Tri-X, as well as for T-max films. Buy the Black&White Darkroom Guide from Kodak, it's very useful!

-- Lot (lotw@wxs.nl), May 19, 1999.

Tri-X in HC-110 Dilution B (1:7) Greg, I know it is easier to just refer to to the dataguide but I suppose you do not have it available at the moment. So here is the info you requested.

18 degrees - 8.5 min 20 degrees - 7.5 min 21 degrees - 6.5 min 22 degrees - 6 min 24 degrees - 5 min

Source: Kodak B+W Darkroom Dataguide

-- Mike Kravit (mkravit@mindspring.com), May 25, 1999.


you can try the times above, but on another note... it is a good idea to process the film at the temperature of your tap water.. So when you wash it ( unless you like tempering your wash with ice) there is no change in the temperature from chemistry to wash.. It is more important to keep the temperature consistant than worry about the developer temperature being a cool temperature. if there is any fluxuation in the temperature of the solutions or wash, the grain size will be increased and the immage distorted. much more than processing at a higher temperature will increase grain size. Sean

-- Sean (zbeeblebrox42@yahoo.com), July 12, 1999.


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