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  1. #21

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    I have used Sodium Sulphite as Clearing agent before when toning, but can I use any of the commercial Hypo Clearing agents e.g. Kodak etc (and Ilfords WashAid)...or should I stick to Sodium Sulphite, when dealing with toning? Rgds, kal
    Kal Khogali

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  2. #22
    Wolfgang Moersch's Avatar
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    Kodak HCA is better than a plain sodium-sulphite solution. Because the pH is lower, a swelling of the gelatin is prevented.

  3. #23

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    Wolfgang, what about Tetenal Lavaquick?

  4. #24

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    Wolfgang, Thanks for the answer. One other question, you talk of a 1:1 solution of commercial sulphite Clearing agent on your website. I assume that for my Kodak Clearing agent (which basically requires dilution to a stock solution before diluting further to a working solution) you mean 1stock to 1water?

    Rgds, Kal
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  5. #25
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    Yes Kal. Relating to the amount of sulphite you have do dilute it 1+1 or max. 1+2. That´s expensive for this purpose. What we need here is sulphite (round about) 10% solution. Stock HCA contains aprox. 20% sulphite. (+ additives for ph regulation and complexing agents, we don´t need for this application).

    Philippe, I dont know if it is a sulphite or a soda solution.

  6. #26

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    Wolfgang, could I use your Lith D additive?

  7. #27
    Wolfgang Moersch's Avatar
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    No Philippe, Lith D contains bromide and a benzimidazole. Lith C contains several sulphites, but it is too expensive because you have to dilute it 1+2 for this purpose.

  8. #28

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    Thanks! Of course I ment Lith C.
    The Fotoimpex catalog says (about Lavaquick): "Eine Vorbehandlung mit Lavaquick verhindert effektiv die Bildung von Tonungsflecken, bei anschliessender Selentonung". Stimmt es?
    Last edited by Philippe Grunchec; 05-13-2009 at 10:16 AM. Click to view previous post history.

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