hand held refractometer question

Discussion in 'Test Kits, Controllers, Reactors and Dosers' started by mala1610, 17 Aug 2016.

  1. mala1610

    mala1610

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    Hi guys . Please could someone clear this up for me I have a hand held refractometer. I would like to calibrate it with RO or Distilled water but my question is if I look into my refractometer after putting the RO or Distilled water in with side do I look for the measurement the right side says PPT% on the bottom says 0 but on the exact same line under SG it says 1.000 .. I would guess on the 0 on the right but the 1.000 confuses me? Thanks
     
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  3. RiaanP

    RiaanP Moderator

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    I would go with the zero number.
     
  4. TaahirS

    TaahirS MASA Contributor

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    Freshwater has a sg of 1.000

    Sg of 1.000 is the same as a salinity of 0ppt
     
    Last edited: 17 Aug 2016
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  5. mala1610

    mala1610 Thread Starter

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    Thanks guys
     
  6. 3dd

    3dd

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    The SG scale starts at 1, where measurements larger than 1 indicate sinking or heavier than water and measurements smaller than 1 indicate less dense than water
     
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