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Testing Equipment
You are here:  Home » Aquarium Supplies » Testing Equipment » Salinity Refractometers
Salinity Refractometers
Captive Purity
  • Much more accurate reading than a hydometer
  • Easily calibrated
  • Three models available
    Description
    The Captive Purity Refractometer is an incredibly accurate and easy to device that eliminates the confusion associated with inexpensive hydrometers. Just place a couple of drops of water on the prism and hold to the light. Reads in percent and specific gravity. An absolute must for the serious marine hobbyist.

    The Captive Purity Refractometer is an optical device (no batteries) dual scaled 0-100% specific gravity: 1.0 to 1.070. Calibrate with distilled water. Adjustable eyepiece, carrying case, pipette and calibration screw driver included. This model is ATC (automatic temperature compensating).
     
     
    Item #   Description  
    Price
     
    Quantity
     
    Ships Within
    006507   Captive Purity, Refractometer  
    $ 69.95
    $ 48.97
     
     
    1-2 Bus. Days
    006508   Captive Purity, Refractometer with Calibration Dial  
    $ 89.95
    $ 62.97
     
     
    1-2 Bus. Days
    006509   Captive Purity, Refractometer with Internal Light  
    $ 119.95
    $ 83.97
     
     
    1 Bus. Day
     
     
    * Prices are subject to change
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