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  1. #1
    argentic's Avatar
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    I'm suffering from gainer illiteracy

    I always thought manufacturers were taking a laugh at us poor consumers by using different names for the same developers. But now I realise that it's probably some trojan virus you get when downloading photography into your brain.

    I'm following the different "gainer-threads" with a lot of interest. But I'm losing trac in the midst of all these different tea blends. That's doubtlesly due to my limited intellectual abilities. I would nonetheless like somebody to explain to me once and for all : which blend is which?

    Pyro-TEA
    ABC Pyro
    P-TEA
    Pyro-TEA
    PMK
    Pyrocat-HD
    WD2D
    Rollo Pyro
    CAT-P-TEA
    PC-TEA
    P-C-TEA
    PCP-TEA
    Q-P-TEA
    PQ-TEA
    QP-TEA
    PM-TEA
    MP-TEA
    PG-TEA
    PT
    DS-10
    DS-12
    MC-G
    MP-G
    PG
    PQ
    PG/PQ
    PQ-PG
    PC-PG
    PC-Glycol
    PG-Glycol
    PQ-Glycol
    MC-Glycol
    MQ-Glycol
    Amidol/PG
    MS Amidol (Microsoft Amidol ??)
    Exactol Lux
    DiXactol
    Sandy King's Pyrocat HD
    Mytol
    XTol
    Etol
    Urinol
    Prescysol
    PD-76
    DD-76
    E-76
    PPPD
    PAP
    Darjeerling

    I probably missed a few. But I can assure you that I DO know what ID-11 is!

    GD
    Wilbert
    http://www.photovergne.com
    Cours photo en Auvergne

  2. #2

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    Sounds like you have a bit of catching up to do :-). Rather than trust messageboards, I'd recommend going to the source and getting this year's second issue of Photo Techniques from phototechmag.com. It contains Gainer's article on developers that use glycol and TEA. Also get the Film Developing Cookbook. Both are must-haves for anyone who mixes his or her own.

    Of course, the comment about the messageboards is general advice. Make an exception and trust this post.

  3. #3
    juan's Avatar
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    It is confusing. A lot of this stuff with TEA (triethanolamine) and PG (propylene glycol) are being made up as we go along - they've never really been published as formulas. Go to unblinkingeye.com and read Patrick Gainer's articles and Sandy King's articles. Sandy created Pyrocat-HD developer.

    As for some of the others, MS Amidol is Michael A. Smith's version of the Amidol print developer - go to his site michaelandpaula.com - you will be reading quite a while.

    PPPD is a pyro based print developer compounded by Don Miller and first (I believe) published on this site.


    I'm exhausted. Someone else take over.
    juan

  4. #4

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    Good job, Jay.

    One correction: The WD2D developing reagents are Pyrogallol and Metol. WD2D is John Wimberly's creation.
    Tom Hoskinson
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    Everything is analog - even digital :D

  5. #5
    juan's Avatar
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    Yes, Jay, very good job. With regards to Pyro/TEA developers, the Photographers Formulary product is named, by them, Pyrotriethanolamine. It would probably be best to discuss that developer by the entire name to distinguish it from Gainer's Pyro-TEA.
    juan

  6. #6

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    I don't think MC-Glycol and MQ-Glycol exist. Apparently metol doesn't dissolve in glycol. It does dissolve in TEA, according to a previous poster.

  7. #7

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    Then there is the question of Glycin.

    I have determined by test that Glycin is not soluble in propylene glycol or ethylene glycol (up to 300 F). Glycin also was not soluble in methanol, isopropanol or ethyl alcohol.

    Is Glycin soluble in triethanolamine? I suspect that it is.

    I will know the answer by the end of the day.
    Tom Hoskinson
    ______________________________

    Everything is analog - even digital :D

  8. #8
    gainer's Avatar
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    "I'm following the different "gainer-threads" with a lot of interest. But I'm losing trac in the midst of all these different tea blends. That's doubtlesly due to my limited intellectual abilities."

    Me too.
    Gadget Gainer

  9. #9

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    Quote Originally Posted by jdef

    WD2D is a catechol based staining developer (I think)

    Jay
    WD2D(+) is pyrogallol based but uses sodium carbonate as the accelerator instead of metaborate as in PMK and Rollo Pyro.

  10. #10

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    Quote Originally Posted by jdef
    MMMMM- Glycin-TEA. Yummm! Is Glycin superadditive with phenidone? Will you try the same proportions of developing agent:TEA as these other formulae? What working characteristics would you expect from a glycin-TEA developer? I look forward to learning your findings.
    Me too!

    I'm starting with an Ansco-130 type formulation split into 2 parts:

    A Solution

    Triethanolamine 130ml
    Metol 4.4 grams
    Hydroquinone 22 grams
    Potassium Bromide 11 grams
    Glycin 22 grams
    Triethanolamine to make 200ml


    B Solution

    Water 700 ml
    Sodium Sulfite 100 grams
    Sodium Carbonate 160 grams
    Water to 1 liter

    Working solution: 50 ml A + 250 ml B + 700 ml water

    If this works ok (in other words like Ansco 130), I will try replacing the Hydroquinone (22 grams) with Pyrocatechol (18 grams).

    Another obvious experiment is to replace the Sodium Carbonate entirely with TEA.
    Tom Hoskinson
    ______________________________

    Everything is analog - even digital :D

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