HP5 rated at 200asa, need developing times

Discussion in 'B&W: Film, Paper, Chemistry' started by Eric Rose, Apr 21, 2003.

  1. Eric Rose

    Eric Rose Subscriber

    Messages:
    4,454
    Joined:
    Nov 21, 2002
    Location:
    Calgary AB,
    Shooter:
    4x5 Format
    I used HC110 at dilution B and developed for 4.5 minutes. Seemed a bit to much development though. I would imagine I should use a more dilute mix so I don't get into to short of develop times. The negs I developed in Pyrocat-HD came out perfect at 13 minutes.

    So sticking to HC110 what dilution and time should I use?
     
  2. lee

    lee Member

    Messages:
    2,913
    Joined:
    Nov 23, 2002
    Location:
    Fort Worth T
    Shooter:
    8x10 Format
    is this predicated on 68 degrees f? How are you getting to dil b? are you mixing as Kodak says or one ounce to 31 ounces? Which film? I forget. I use the one ounce to 31 ounces for my convience.

    lee\c
     
  3. lee

    lee Member

    Messages:
    2,913
    Joined:
    Nov 23, 2002
    Location:
    Fort Worth T
    Shooter:
    8x10 Format
    I usually develop in the 6 minute range for normal. For cold light. Have you printed the film yet from HC110? Do that before passing judgment.

    lee\c

    I know Hp5+ and at 200 That should do it.

    l\c
     
  4. JHannon

    JHannon Member

    Messages:
    969
    Joined:
    Sep 7, 2002
    Location:
    Boston, MA
    Shooter:
    Multi Format
    Check out this site for HC110 information.

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

    You might want to look into some of the other dilutions. I am trying Dilution H (unofficial-not described in Kodak Pubs) with is 1:63 (about 1/2 strength of Dil B)
    The development times for Dilution H are about twice the Dilution B times.

    I use Tmax and it gives me longer times so I can do (N-1 N-2) without going with too short a development time.

    The Massive Development chart says 5 mins for HP5 @400 with HC110 B.

    http://www.digitaltruth.com/devchart.html

    I hope this helps, it helped me quite a bit.

    Regards,
    John
     
  5. Eric Rose

    Eric Rose Subscriber

    Messages:
    4,454
    Joined:
    Nov 21, 2002
    Location:
    Calgary AB,
    Shooter:
    4x5 Format
    The negs looked over developed at 4.5 minutes to me. This is using dilution B. I will continue my quest. The temp was 70F.
     
  6. ann

    ann Subscriber

    Messages:
    2,923
    Joined:
    Sep 10, 2002
    Shooter:
    35mm
    We have been using that dilution rate for years in our classroom labs. Development time 5 minutes at 68. Film rated at 200. My own time is 5 1/2 minutes for one camera body, 5 for the other. EI 160 and 250 for corresponding bodies.
     
  7. KenM

    KenM Member

    Messages:
    800
    Joined:
    Apr 22, 2003
    Location:
    Calgary, Alb
    Shooter:
    4x5 Format
    Barnbaum suggests 6.5 Minutes for N development in 1+7.5 stock to water. N-1 is 4.5 minutes, N+1 is 10.5 minutes.

    Calgary water is more alkaline than his, so I've adjusted my times downwards about 10%. Seems to work ok for me.