SG & Temperature

Discussion in 'Technology' started by Warr7207, 14 Jun 2009.

  1. Warr7207

    Warr7207

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    Why Specific gravity of water rise when the temperature drops ?
     
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  3. viper357

    viper357 Admin MASA Contributor

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    Why is this in the Off Topic forum?
     
  4. martin

    martin Reef Adict

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    15 deg 25 deg salinity
    1.022 1.020 30gm/l
    1.023 1.022 32
    1.025 1.023 34
    1.027 1.025 36

    Hope this helps
     
  5. Reef Maniac

    Reef Maniac MASA Contributor

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    That is because the water expands, and thus become less dense, as the temperature increase above 3.98°C, which is the temperature where pure water is at it's maximum density of 1.0000 (below this temperature the water starts to crystallize (ice) and becomes much less dense.)

    Here is an extract from what I consider to be the definitive article on this matter, called Specific Gravity: Oh How Complicated!, written by Dr. Randy Holmes-Farley and published in the now defunct advancedaquarist.com ezine

    Hennie
     
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