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  1. #11
    Athiril's Avatar
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    It's all good

  2. #12
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    This is interesting.

    So, it looks to me like a single bleach could be purchased for use in all color work. Simply dilute it properly for the task at hand.

    Is that a fair thought?

    Given that thought, does the idea carry over to uses in B&W work?

    Along this line it's my understanding from rooting around here that C-41 fix stock can be used similarly, basically for everything in the darkroom, with the caveat that once a working solution is applied to color material it is not then applied to B&W.

    Is that a fair assessment?
    Mark Barendt, Ignacio, CO

    "We do not see things the way they are. We see things the way we are." Anaïs Nin

  3. #13
    Athiril's Avatar
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    Well..I use E-6 fixer for everything.

  4. #14
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    The film bleach that I "designed" in the previous post is not a serious replacement for the true C41 bleach and fix due to a number of problems, but it can do the job if one is careful and one is in a bind. Remember that please.

    However, it is possible to design one blix for all color products and design it in such a way that the fix can be used for B&W products. I have done that! It is basically Super Fix VII + an extra, optional part. However, to do the job right it uses some expensive and exotic ingredients and therefore is basically impractical at this time.

    PE

  5. #15

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    Quote Originally Posted by Photo Engineer View Post
    However, it is possible to design one blix for all color products and design it in such a way that the fix can be used for B&W products. I have done that! It is basically Super Fix VII + an extra, optional part. However, to do the job right it uses some expensive and exotic ingredients and therefore is basically impractical at this time.
    I thought Afga's Universal Fix was good for B&W, E-6 and C-41 - atleast I've been using it for both C-41 and E-6.

    Nice to know about the RA4 chemistry, I have some 4-5 year old Agfa stuff sitting around in the basement, I'll have to give it a try, especially since I can't reuse fixer in my Phototherm.

  6. #16

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    Oh, I use a fish tank Air Pump to aireate my bleach, both E-6 and C-41, the pump runs for an hour at 2am every morning.

  7. #17
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    You can use color fix for B&W but in some cases you cannot use B&W fix for color. This is due mainly to pH.

    PE

  8. #18
    RPC
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    Quote Originally Posted by Photo Engineer View Post
    Remember: Aerate, add some Ammonium Bromide or Ammonium Chloride and adjust the pH with Acetic Acid 28% or Ammonium Hydroxide 28% as needed.
    Can the bromides/chlorides be sodium/potassium instead of ammonium?

  9. #19
    Photo Engineer's Avatar
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    If they could, I would have said so!

    The ammonium salts are essential to make them work with film.

    PE

  10. #20

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    PE,

    Just to clarify, is the formula below for processing film in paper chemicals? I'm not misreading it? If so, it's a great news for me because I too am running out of C41 bleach, but I have a lot of RA4.
    Also, by extended times you mean how long? I know, I can test
    the fixer, but what about the bleach?

    Thanks!

    Eugene.

    Quote Originally Posted by Photo Engineer View Post
    You can use the RA4 bleach fix as a bleach then fix by using 1/2 the amount of water with each part, so 1L of part A which might be used with 1L of part B to make 4 L of working solution would be mixed as follows:

    1 liter of part A + 500 ml of water to make 1.5 L of working strength
    1 liter of part B + 500 ml of water to make 1.5 L of working strength.

    This is 3L of solution not 4 which would be used for paper. Use extended times, and make no pH adjustment. Use a 1% stop bath if possible.

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