Salt and refractometer

Discussion in 'General Discussions and Advice' started by CameL, 8 Sep 2014.

  1. CameL

    CameL

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    Hi guys,

    Im struggling with my salinity, everday i get a different reading on my refractometer, it must be the way im calibrating it.
    I want to make a calibration solution as per Randy Holmes-Farley do-it-yourself refractometer standard matching 35 ppt seawater however he refers to Morton's iodized Salt and i have never seen that product here.
    What substitute can i use or should i buy a calibration fluid ?
    Your views and opinions would be appreciated.
     
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  3. Dian6430

    Dian6430

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    I calibrate my refracto with ro water and its working great
     
  4. Nemos Janitor

    Nemos Janitor

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    Last edited by a moderator: 26 Nov 2015
  5. NJH

    NJH

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    Also make sure that when you place the water sample on the unit to wait about 15 seconds to allow the temperature to equalise if the unit is an ATC unit.
     
  6. CameL

    CameL Thread Starter

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    Last edited by a moderator: 26 Nov 2015
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