Changing Developing Times with dilution

Discussion in 'B&W: Film, Paper, Chemistry' started by shicks5319, Aug 23, 2004.

  1. shicks5319

    shicks5319 Member

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    Hi everyone. I hope you don't mind another question from the newbie corner.

    I am shooting TRI-X 320 and developing in HC-110. Kodak's tables show the developing time for this combination in trays at 3.25 minutes (20C). It seems to me this leaves very little room for N- or N+ development; certainly at times as short as this the margin of error is higher.

    I want to try dilution beyond the standard "B" suggested by Kodak as a means of stretching out the development time.

    Before I start any trials, I thought I'd see what experiences this group may have in this area. Are there published data on this tactic?

    Thanks in advance for any insight.
     
  2. juan

    juan Subscriber

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    There was a lot of discussion about the short development times when Kodak introduced the latest version of Tri-X. A lot of people think the published times are simply incorrect - far too short. Most people seem to continue to use their times for the older version of Tri-X - probably in the 5-6 minute range.

    Take a look at this page for a lot of information on HC-110, including with Tri-X

    http://www.covingtoninnovations.com/hc110/

    juan
     
  3. Flotsam

    Flotsam Member

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  4. Konical

    Konical Subscriber

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    Good Afternoon, Shicks,

    Go to Google and enter "HC-110 Developer" (without the quotation marks, of course); you should get a web site for Covington Innovations which has very detailed information on the developer, including various dilution ratios and some recommended times for several popular films.

    Konical
     
  5. shicks5319

    shicks5319 Member

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    Thanks for the Help

    Thanks for the help on this. the references were very interesting.

    I noted that one suggestion was that doubling the dilution would render the developer into a one shot mix where as now Kodak has a quantity of film suggested.