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Thread: HP5+ in HC-110: Is 5 min too short?

  1. #1

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    HP5+ in HC-110: Is 5 min too short?

    Folks, I see that, for EI 400/27, Ilford states 5 min for HP5+ in dilution B of HC-110. Ditto "Massive Dev Chart" of Digitaltruth Photo Ltd.

    About to start some tests, including rating the film at EI 250/25, but I am concerned that 5 min is too short, i.e., resulting in uneven development--using agitation constant for 60 sec, then ~10 sec each 30 sec thereafter.

    I am using a SP-445 tank, max 4 negs per cycle, approx 475 ml solution (the tank's capacity).

    Experience? Opinions?

    Thanks!
    Peter Collins

    On the intent of the First Amendment: The press was to serve the governed, not the governors --Opinion, Hugo Black, Judge, Supreme Court, 1971 re the "Pentagon Papers."

  2. #2

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    Re: HP5+ in HC-110: Is 5 min too short?

    For the sake of even development, I'd choose a higher dilution, which would then require a longer development time. I haven't used HC-110 in maybe 25 years, so can't give you any recommendations. But someone here will have an idea- remember some testing will be necessary.

  3. #3

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    Re: HP5+ in HC-110: Is 5 min too short?

    I would use a different dilution with a longer developing time but that’s just me so please be sure to let us know what you figure out. I get nervous when my developing time is less than 7 min!
    Last edited by Luis-F-S; 15-Mar-2018 at 19:30.

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    Corran's Avatar
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    Re: HP5+ in HC-110: Is 5 min too short?

    I've been happy with dil. H rated at about 250 like you, with maybe a slight pull in time (10 minutes instead of the recommended 11 I think it is). Contact printing an 8x20 negative with that time/dilution looked great.
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    All comments and thoughtful critique welcome

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    Pali K Pali K's Avatar
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    Re: HP5+ in HC-110: Is 5 min too short?

    Peter,

    I have settled on HC-110 B for HP5 at 5M 15Sec but please note that I use a JOBO CPP2 at the same exact temperature and agitation.

    Pali

  6. #6
    Unwitting Thread Killer Ari's Avatar
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    Re: HP5+ in HC-110: Is 5 min too short?

    I think 5 minutes is the shortest amount of time I'd allow for film development.
    You can add a pre-soak to ensure more even development, and you could also try a different dilution for a longer development time, just to see.

  7. #7

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    Re: HP5+ in HC-110: Is 5 min too short?

    Development unevenness can be minimized by immersing the film quickly and agitating right away. A pre-soak helps too, in my experience.

    And, I have used HC-110 at five minutes with sheet film with fine results. That said, I found that more diluted HC-110 and longer times worked better for expansions with some films (T-Max). I simply diluted 1+63 (not sure what that dilution is called; it's not an "official" Kodak dilution) and doubled my time for starters. You could do the same: 10 minutes in HC-110 diluted 1+63. Just make sure you have enough concentrate to develop the amount of film you have.

    Best,

    Doremus

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