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  1. #11

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    Quote Originally Posted by Tom Hoskinson View Post
    Sodium and Potassium carbonates are not soluble in glycol. Both are readily soluble in water.
    Tom,

    Thanks for this information. I was fairly sure that the carbonates were not soluble in glycol but appreciate your exact knowledge.

    I had not considered the possibility of mixing the carbonate B solution in TEA. Might be a bit overkill, but the though is interesting.

    Sandy

  2. #12

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    Quote Originally Posted by sanking View Post
    Tom,

    Thanks for this information. I was fairly sure that the carbonates were not soluble in glycol but appreciate your exact knowledge.

    I had not considered the possibility of mixing the carbonate B solution in TEA. Might be a bit overkill, but the though is interesting.

    Sandy
    Just suggesting trying TEA plus water instead of Carbonate.
    Tom Hoskinson
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  3. #13

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    Quote Originally Posted by Tom Hoskinson View Post
    Just suggesting trying TEA plus water instead of Carbonate.
    Tom,

    I am pretty sure that TEA + water will not work in place of carboante + water with any of the Pyrocats. Pyrocat needs a working pH of about 10.9 or higher. TEA gives only about pH 9.2 or so , much too low for active development with the Pyrocats.. This pH works fine with pyrogallol based reducers, but not with pyrocathecin/catechol reducers which need a much higher working pH.

    Sandy

  4. #14
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    Tea is strong enough to use with PMK in place of the Kodalk solution. I have tested that. Diethanolamine might be strong enough to use with thr Pyrocats, but you'd have to experiment with the ratio. I don't see much need to use the organic base for the B solution. The water solution works and will last a long time.
    Gadget Gainer

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