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Thread: Adox CMS 20 Slides, what bleaching chem ???

  1. #31

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    Re: Adox CMS 20 Slides, what bleaching chem ???

    It's hard keeping people standstill at 6 ISO but I guess I can try both approaches.

  2. #32

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    Re: Adox CMS 20 Slides, what bleaching chem ???

    Quote Originally Posted by Raghu Kuvempunagar View Post
    I've dabbled with reversal processing of Adox CMS 20ii. I used home brew ID-62 as the first developer without any halide solvent and I got very decent results. I used copper sulphate + sodium chloride bleach. Others have had problems with this film when using stronger bleaches like dichromate and permanganate.
    How much time do you bleach in copper sulphate-sodium chloride?

  3. #33

    Re: Adox CMS 20 Slides, what bleaching chem ???

    Quote Originally Posted by Malanov View Post
    How much time do you bleach in copper sulphate-sodium chloride?
    4-5 minutes. But you should test with a small strip and determine the time required.

  4. #34

    Re: Adox CMS 20 Slides, what bleaching chem ???

    Quote Originally Posted by Raghu Kuvempunagar View Post
    4-5 minutes. But you should test with a small strip and determine the time required.
    Please note that bleaching with copper sulphate-sodium chloride is a two step process unlike dichromate/permanganate. See this thread for more details: https://www.photrio.com/forum/thread...bleach.137943/

  5. #35

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    Re: Adox CMS 20 Slides, what bleaching chem ???

    Noted. I see it also works good with TMax.

  6. #36

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    Re: Adox CMS 20 Slides, what bleaching chem ???

    With Ilford PQ Universal + 1.2g PEG-1500 + 0.5g sodium thiosulfate - 12 min first development. Transparencies are very very good, but exposure has to be at 6 ISO. I was testing on sheet films which expired two months ago.

  7. #37

    Re: Adox CMS 20 Slides, what bleaching chem ???

    Quote Originally Posted by Malanov View Post
    With Ilford PQ Universal + 1.2g PEG-1500 + 0.5g sodium thiosulfate - 12 min first development. Transparencies are very very good, but exposure has to be at 6 ISO. I was testing on sheet films which expired two months ago.
    Congratulations! Would you mind sharing the scanned images if it is not too much of a problem?

  8. #38

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    Re: Adox CMS 20 Slides, what bleaching chem ???

    Thank you. I'll send you a sample as soon as I take something else than family pictures.

  9. #39
    Tin Can's Avatar
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    Re: Adox CMS 20 Slides, what bleaching chem ???

    I am interested in your complete reversal process, with chemistry

    Quote Originally Posted by Malanov View Post
    Thank you. I'll send you a sample as soon as I take something else than family pictures.
    where is the monolith

  10. #40

    Re: Adox CMS 20 Slides, what bleaching chem ???

    Quote Originally Posted by Tin Can View Post
    I am interested in your complete reversal process, with chemistry
    I'm not Malanov but this is the process which gave me very decent results for Adox CMS 20ii in 135 format, in case you're interested in knowing:

    EI: 6 and sometimes 8
    Processing temperature: 23C
    Tank: Paterson System IV two reels

    1. Two minutes presoak in tap water. Initial thirty seconds agitation.
    2. Four minutes in First Developer. Initial thirty seconds agitation followed by three inversions every thirty seconds.
    3. One minute slow rinse in tap water followed by wash.
    4. 4-5 minutes in Copper Sulphate bleach. Continuous gentle agitation.
    5. Wash. (Film should look pale throughout.)
    6. 3-5 minutes in 2% Ammonia solution. Continuous gentle agitation.
    7. Wash. (Film should show a light coloured halide positive image.)
    8. 2 minutes in 2% Sodium Sulphite solution. Intermittent gentle agitation. (Film should show a light coloured halide positive image.)
    9. Light exposure.
    10. 5 minutes in second developer. Initial thirty seconds agitation followed by three inversions every thirty seconds.
    11. Wash. (Film should show a strong silver positive image.)
    12. Fix + Wash + Dry

    First Developer:
    Water: 500ml
    Phenidone 1%: 10ml (equivalent to 0.1g)
    Sodium Sulphite: 25g
    Potassium Bromide: 0.45g
    Hydroquinone: 2.25g
    Sodium Carbonate: 20g
    Sodium Hydroxide: 1.125g
    Water to make: 600ml

    Second Developer:
    I use the first developer also as the second developer for this film.

    Bleach:
    Water: 750ml
    Copper Sulphate: 50g
    Sodium Chloride: 50g
    Sodium Hydrosulphate: 35g
    Water to make: 1000ml

    I use gloves in all steps and mask+goggles while handling Ammonia.

    Unlike dichromate and permanganate bleaches, bleaching with Copper Sulphate involves two steps. First the silver image is converted into Silver Chloride and then the Chloride is removed by Ammonia.

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