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Test the ph of rive

  1. Jul 15, 2014 #1
    I need to test the ph of river. I need a method of making an indicator that I can make at home. Please help !
     
  2. jcsd
  3. Jul 15, 2014 #2

    Simon Bridge

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    Welcome to PF;
    Have you tried googling "make your own ph indicator"?

    If you boil red cabbage - the water turns purple - the color is sensitive to pH.
     
  4. Jul 15, 2014 #3
    Thanks
     
  5. Jul 15, 2014 #4

    NascentOxygen

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    Staff: Mentor

    Do you know approximately what pH to expect? Is the river badly polluted? Is there any animal life present in the water?

    I remember making an indicator from the purple juice of "ink weed" berries. It turned green in an alkali, I think.
     
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