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TDS/PPM Meter questions

Discussion in 'General Discussion' started by PotRoast, Jul 16, 2008.

  1. PotRoast

    PotRoast Well-Known ReefKeeper

    +24 / 0 / -0
    Can I use my TDS/PPM meter to determine specific gravity?

    If not, what do I need to buy to make this reading?

  2. slovan

    slovan Experienced Reefkeeper

    +0 / 0 / -0

    PotRoast, there are several different types you can use.

    Plastic hydrometer - The cheapest and probably the most inaccurate way to measure sg.

    Refractometer - Most practical and efficient way to measure sg.  Requires frequent calibration to maintain accuracy.

    Floating hydrometer - Probably most accurate since it requires no calibration.  Just need to apply temperature correction factor for anything +/-77 degrees F.

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