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  1. #1

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    Strange question.

    I bought some Amidol from a local chemistry house, and it has lots of little sparklies in it. It really doesn't look much like a fine powder, it looks more like little crystals or something. I have used it, but it takes a LOT of Amidol to make up the 8g for the formula I use. So it's not dense. It seemed to work okay, but I don't really have a reference point because I am a new user.

    I also just got some Amidol from Formulary and it looks quite different. It IS a powder, gray and kind of flat looking, and much denser.

    Why the difference? Does it matter?

    dgh

    David G Hall

  2. #2

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    I have heard of Amidol being all the way from white to black in color. My latest from Formulary is almost black. I think it ages kinda like wine...And like wine if you don't get it wet before use it works much better. Maybe that is why this stuff is so darned expensive. Realistically there are only two grades of Amidol, in my understanding, a hair grade (why it is named that I have no idea) and the photo grade. So if your hair is still relatively unaffected I would assume that you have the right stuff.
    Art is a step from what is obvious and well-known toward what is arcane and concealed.

    Visit my website at http://www.donaldmillerphotography.com

  3. #3
    brYan's Avatar
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    David...

    Check out Michael and Paula's AZO forum. I believe there is a thread that talks about this in the chemistry section.

    www.michaelandpaula.com

  4. #4

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    </span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (David Hall @ Feb 9 2003, 10:44 AM)</td></tr><tr><td id='QUOTE'> I have used it, but it takes a LOT of Amidol to make up the 8g for the formula I use. </td></tr></table><span class='postcolor'>
    David,

    Not sure what you mean by a &#39;lot&#39; but from the formulas I have written down 7g of Amidol equals about a tablespoon full. I&#39;m sure this will vary depending on how much moisture your amidol has absorbed.

    Roger...

  5. #5
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  6. #6

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    Aggie,

    That&#39;s exactly what I mean. I mean it&#39;s like a heapinig tablespoonful and the scale is barely dead on 8g. It is very airy.

    dgh
    David G Hall

  7. #7

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    David,
    It seems that is the way mine is. I don&#39;t worry about it. I would take that as a good sign since one of the things that I have heard is that Amidol is to be kept dry, until one is ready to use it. Density would seem to have to come from moisture. I have noticed that mine (from Formulary) takes some time to dissolve adequately in the tray (pretty granular)...again I don&#39;t worry about it...I mix it and use it. Seems to work pretty well. Good luck.

    Regards,
    Donald Miller
    Art is a step from what is obvious and well-known toward what is arcane and concealed.

    Visit my website at http://www.donaldmillerphotography.com

  8. #8

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    The Formulary&#39;s amidol is always dark grey, but it works just fine. I usually have a few small particles that do not dissolve, and I simply strain them out. The amidol I used to get from Bryant Labs was a white crystalline powder (well, maybe off white), and it dissolved very easily and left no residue. Amidol crystals are very light, so it seems to take a lot. My knowledge of chemistry is limited, but perhaps someone could tell us if there are aren&#39;t several ways to make amidol that result in different grades.

    Someone referenced a thread on Michael Smith&#39;s site. I believe he said something like he has some very old amidol (40 or 50 years old) that is quite black but still works fine.

  9. #9

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    There difference in the purity depends on if the Amidol is recrystallized or not. Recrystallizing removes most of the impurities.

    There is a hair grade and a dye grade. Amidol has only a nitch use in photography, there is no &#39;photo&#39; grade. Hair grade goes into hair coloring formulations. There are several threads discussing amidol at
    http://www.michaelandpaula.com/AzoForum/default.asp
    art is about managing compromise

  10. #10

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    Ed,

    About straining out stray Amidol...when I saw Michael Smith mix up some Amidol at a recent workshop, there were lots of little floaties (as opposed to floaters) and said that&#39;s normal and he doesn&#39;t worry about them or strain them. And it didn&#39;t seem to matter in the print.

    One thing though...when he mixed it, the solution was kind of gray colored. When I mix it, it looks more amber colored, a little like Pyro. But there does not seem to be a difference in effectiveness.

    dgh

    David G Hall

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