Essential PH Meter: How to work out PPM?

Discussion in 'Hydroponic Growing' started by Calvin Kirk, Feb 25, 2016.

  1. #1 Calvin Kirk, Feb 25, 2016
    Last edited by a moderator: Feb 25, 2016
    Hi, using my Essential ph meter, how do I work out the ppm? I had a thread on this but it's gone now.

  2. pH and ppm are different.
  3. EC, TDS, and PPM are all directly correlated but pH is separate.
  4. LOL I meant my EC meter, not PH sorry about that, I know I have to multiply the reading by 700 or 400, someone told me how to do it but I forgot.
  5. In the manual (which I just managed to find) it says 1ec = 700ppm so I just times by 700 right?

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