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  1. #1
    Loose Gravel's Avatar
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    Agfa Neutol Plus paper developer formula

    Anybody know the formula for this developer?
    Watch for Loose Gravel

  2. #2

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    It is a Agfa proprietary formula based on iso-ascorbic acid (instead of hydroquinone).

    The newly reorganized Agfa does not have their Material Safety Data Sheets on their website.

    If you are looking for "mix it yourself" ascorbic acid based formulas, take a look at

    Ryuji Suzuki's DS-14 and DS-15 developers:

    http://silvergrain.org/Photo-Tech/pr...recommend.html

    Also, take a look in the APUG Chemistry Recipes.
    Tom Hoskinson
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  3. #3

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    Another "mix it yourself" ascorbic acid paper developer is E72, which is an ascorbic acid variant of D72/Dektol. Here's one URL with the formula:

    http://www.stanford.edu/~cpatton/yingui/e72.htm

    I believe I've seen references to it being possible to substitute metol for the phenidone, but you need ten times as much metol. D72 actually uses metol, FWIW.

    Many of Patrick Gainer's formulas can also be used for paper. He covers this in one of his early articles:

    http://unblinkingeye.com/Articles/VitC/vitc.html

    Note that I've not (yet) tried any of these, so I'm not endorsing them or saying they're better than DS-14 or DS-15. I'm just tossing them out as alternatives.

  4. #4

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    There is an MSDS at:

    http://www.freestylephoto.biz/pdf/ms...eutol_Plus.pdf

    Not all ingredients are listed. Different jurisdictions have different requirements for components that are present in small quantities. There would be some phenidone (or dimezone-S etc), and maybe some EDTA etc.

  5. #5

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    Neutol Plus puzzles me. I've found it tough to make an ascorbic acid or ascorbate paper developer that gives a full d-max on MGIV without adding lye. Carbonate just doesn't seem to do it.



 

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