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Captive Purity Refractometer with Calibration Dial
Product Description
The Captive Purity Refractometer is an incredibly accurate and easy to use 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 included. This model is ATC (automatic temperature compensating).
This Captive Purity Refractometer has additional features including: •No Screwdriver Needed for Calibration •Heavy Duty Hinge Pin Design
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 included. This model is ATC (automatic temperature compensating).
This Captive Purity Refractometer has additional features including: •No Screwdriver Needed for Calibration •Heavy Duty Hinge Pin Design
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