Hydroquinone test

Discussion in 'B&W: Film, Paper, Chemistry' started by John Wiegerink, Jan 21, 2013.

  1. John Wiegerink

    John Wiegerink Member

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    Hydroquinone test? Better title!
    Is there a quick test to see if my Hydroquinone is still good? I have two 1lb. plastic jars of Kodak Hydroquinone that I know are very old, but don't know exactly how old. One is nearly white yet and the other is slightly darker. I've used all my "fresh bought" store stuff and thought I'd try this before I ordered more. I was just wondering if there is some kind of dip test or something I can use to tell. JohnW
     
  2. Gerald C Koch

    Gerald C Koch Member

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    From your description it sounds like both are OK. If they were bad the hydroquinone would be a dark brown. Keep the jars in a cool place and do not expose them to light and they should last for years.
     
  3. mts

    mts Subscriber

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    I am about to finish HQ stock that is at least 40 years old. It's in the original Kodak brown bottle and is light gray in color, and is just fine still. Sounds like yours has a few more years to go.
     
  4. John Wiegerink

    John Wiegerink Member

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    Yes, mine must be a little more modern since it's in Kodak's squatty plastic container. I got it from the widow of a friend of mine after he passed, but that was about 20years ago. I don't know when he got it, but he kept stuff in his dry, basement darkroom and I've been keeping it in my upstairs darkroom since I got it from her. I guess I'll just mix up some more developer and got to town. JohnW
     
    Last edited by a moderator: Jan 21, 2013