Calibrating pH meter without buffer

Discussion in 'Hydroponic Growing' started by ChaoticGood, Jun 18, 2016.

  1. #1 ChaoticGood, Jun 18, 2016
    How can I calibrate a pH meter without the supplied buffer? I use a POIT pH meter. Thank you.
     
  2. #2 Vee, Jun 18, 2016
    a crutch is a crutch no matter what you call it

    buffer sol. should be at your local drug store
     
  3. #3 Charlie0824, Jun 19, 2016
    In theory, distilled water should have a pH of 7.0 at 77°F. My tap water, from the city of Detroit, has a pH of 7.0 99.9% of the time too, at room temp.


    Sent from my iPad using Grasscity Forum mobile app
     
  4. #4 ChaoticGood, Jun 21, 2016
    Thank you, I use distilled water to try to calibrate to 7.0 but still not happy. It looks like pH buffer solution is the only option.
     
  5. #5 deman81k, Jun 22, 2016
    Yup. Only way I've seen to calibrate properly
    I use a 7.0 and a 4.0 buffer every time I calibrate as proper ph is critical
     

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