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Article: AGFA 304 & 305

  1. #1

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    AGFA 304 & 305

    AGFA

    304

    Water --------------------------800ml
    Sodium Thiosulphate ------------200g
    Ammonium chloride --------------50g
    Potassium metabisulphite --------25g
    Water enough to make up to 1 Litre

    305

    Water --------------------------800ml
    Sodium Thiosulphate ------------200-300g
    Sodium sulphite -----------------12g
    Potassium metabisulphite --------12g
    Water enough to make up to 1 Litre

  2. #2
    Ian Grant's Avatar
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    CORRECTED

    AGFA

    304 Rapid Fixer

    Water ------------------------------ 800ml
    Sodium Thiosulphate --------==----200g
    Ammonium chloride ----------------50g
    Potassium metabisulphite ----------20g
    Water enough to make up to 1 Litre

    305 Hardening Fixer

    Water ------------------------------800ml
    Sodium Thiosulphate ---------------200g
    Sodium sulphite (anhyd)----------- 20g
    Acetic acid (glacial) ----------------15ml
    Potassium Alum (dodecahydrate)--10g
    Water enough to make up to 1 Litre



    You need to clarify the form of Sulphite, it's anhydrous in these formulae (wasserfrei). Also Agfa 305 contains 200gm Sodium Thiosulphate and 15ml Glacial acetic acid - Eisessig 15ml, and Potassium Alum not Potassium Metabisulphite.

    Agfa 304 is a Rapid fixer while 305 a regular Sodium Thiosulphate hardening fixer

    Source- various Agfa and Orwo Rezepte books of formulae).

  3. #3
    Bob Carnie's Avatar
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    304 rapid
    Is this working strength or stock. if stock what is the dilution for paper?

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    Ian Grant's Avatar
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    It's working strenght Bob. I have been using this one for the last two years, I'd run out of Hypam and it was a holiday and I had the raw chemistry. Seems to work well, I use it two bath for papers.

    Ian

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    Bob Carnie's Avatar
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    thanks Ian
    so for me I just multiply by 20 each component and I am good to go.

    Quote Originally Posted by Ian Grant View Post
    It's working strenght Bob. I have been using this one for the last two years, I'd run out of Hypam and it was a holiday and I had the raw chemistry. Seems to work well, I use it two bath for papers.

    Ian

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    Ian Grant's Avatar
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    Quote Originally Posted by Bob Carnie View Post
    thanks Ian
    so for me I just multiply by 20 each component and I am good to go.
    I'd test it well first make sure it's Ok for your usage. I'd prefer to buy Ammonium Thiosulphte rather than add Ammoniun Chloride to Sodium Thiosulphate to form it, this formula is quite old and before Ammonium Thiosulphate began being produced at a reasonable cost, it was once uneconomic.

    Ian

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    Bob Carnie's Avatar
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    I will follow your lead and try it with Ammonium Thiosulphte, if so what am I looking at as components for a 1 litre working solution.? You know I am absolutely daft.

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    HI Ian yes updated versions I guess, thank you for the corrections.

    The 304 was from Agfa book and 305 from the Gevaert book 1938.

    Ian I have followed quite a few of your posts and realise your quite an authoritative and knowledgeable person with photographic chemicals. I need to pick your brains, but will send you a PM.



 

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