Atomal/Calbe A49 - Successful clone.

Discussion in 'B&W: Film, Paper, Chemistry' started by Relayer, Jun 7, 2011.

  1. Relayer

    Relayer Member

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    Last month I was make some experiment with different formulas like Atomal/Calbe A49. I use CD-1 because it available in my country. I'm really impressed with results. Some samples:

    CD-1 + Ascorbate + Kodalk, Ilford HP5+ @400

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    CD-1 + Hydroquinone + Borax, Ilford HP5+ @400

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    Last edited by a moderator: Jun 7, 2011
  2. michael_r

    michael_r Subscriber

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    Thanks for posting this. Have you tried these with a slower film like FP4 or Pan F?
     
  3. Роберт

    Роберт Member

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    I did some test with a CD too. Ortho Phenylene Diamine like in the W665 formulae. However here you have a speed loss of 1F stop. But the result is very fine grain. The interesting about your A49 and Ascorbate is the film speed: Still E.I. 400 with that HP5+ ?

    Fomapan Creative 200 (135-36) in W665 E.I. 100

    [​IMG]
     
  4. Alan Johnson

    Alan Johnson Subscriber

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  5. Relayer

    Relayer Member

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    ascorbate version:
    Sodium Sulfite 60g
    CD-1 2g
    Sodium Ascorbate 5g
    Kodalk 7g
    Water 1l

    CD/Q version:
    Sodium Sulfite 100g
    CD-1 5g
    Hydroquinone 6g
    Borax 6g
    Boric Acid 4g
    Water 1l

    no. but I think that result will be very-very good
     
  6. Alan Johnson

    Alan Johnson Subscriber

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    Last edited by a moderator: Jun 8, 2011
  7. Relayer

    Relayer Member

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    N-Hydroxyethyl-o-aminophenol used in original Atomal isn't available anywhere.

    CD-1 is N,N-Diethyl-p-phenylenediamine sulfate, CAS: 6283-63-2. its still available.
    CD-1 can be substituted (and I really substitute it) with N,N-Diethyl-p-phenylenediamine Hydrochloride, CAS: 2198-58-5 (also available).
    CD-1 also can changed to CD-2 - N, N-bis (2-hydroxyethyl)-p-phenylene diamine Sulfate (CAS: 4327-84-8), but CD-2 need in 1.5-1.8 times more
    you can try to use CD-3 or CD-4. can't test it because not available in my country
     
  8. Alan Johnson

    Alan Johnson Subscriber

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    One day it would be an interesting experiment to try to make something like original Atomal ,replacing oxyethyl o aminophenol by p-aminophenol hydrochloride,maybe.