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  1. #11

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    Nov 2004
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    I hope to find a microfilm developer to mix as the commercial ones giving good speed are quite expensive.
    The H&W control formula posted above seems rather concentrated. I wonder if it would be OK to dissolve the phenidone in isopropyl alcohol and make the concentrate less concentrated.

  2. #12

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    Quote Originally Posted by Alan Johnson
    I hope to find a microfilm developer to mix as the commercial ones giving good speed are quite expensive.
    The H&W control formula posted above seems rather concentrated. I wonder if it would be OK to dissolve the phenidone in isopropyl alcohol and make the concentrate less concentrated.
    Yes Alan, you can dissolve the phenidone in isopropyl alcohol or in one of the glycols. I find that stock solutions of phenidone dissolved in propylene gycol keep for a very long time (years).
    Tom Hoskinson
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    Everything is analog - even digital :D

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