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  1. #1
    AllanD's Avatar
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    Does anyone have a recipe for a good RA4 developer tar remover. I've used Nova's own product, and it works well. However, I've just run out and was wondering if there is a cheap alternative.

  2. #2
    edz
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    Quote Originally Posted by AllanD
    Does anyone have a recipe for a good RA4 developer tar remover. I've used Nova's own product, and it works well. However, I've just run out and was wondering if there is a cheap alternative.
    Yes. My favorite tar-buster is
    • - 1 part 60% Acetic Acid (as in Stopbath concentrate)
      - 1 part Pure IPA (Isopropanol >98%)
      - 1 part Aqua Dest. (de-minerialized water)


    alternatively 1 Part IPA + 1 part SURIG Essigessenz vinegar concentrate from German Supermarkets (which is 25% but ..)
    Edward C. Zimmermann
    BSn R&D // http://www.nonmonotonic.net



 

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