Digital Refractometer

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    …the oldest of the 3 seawater measurements scales S.G. - The current standard of Specific Gravity hydrometers and refractometers.   The Milwaukee Instruments MA887 digital refractometer is easy to calibrate and easy to read and provides highest accuracy possible for the measurement of seawater 3…

    $124.99

    …Expansion Module: Monitor/Control Conductivity/Salinity and temperature 4 Measurement ranges (0-900 uS/cm, 0-9.0 mS/cm, 0-90.0 mS/cm, 0-50 ppt) 6 digital inputs for float switches, water on floor sensors, pressure sensors, etc Full data logging support in Apex Base module Up to 240 AquaBus modules…

    $84.95

    Quickly and accurately get a digital readout of the salinity and temperature of your aquarium water. Seawater contains a variety of elements that will contribute to the overall specific gravity of the water. Many digital salinity meters are calibrated to read a sodium chloride only or brine solution…

    $69.99
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