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The Waterbox Refractometer is designed for testing the concentration of saltwater. Its triple scale provides a direct reading of the specific gravity and concentration (Parts per Thousand) of salt in water. It provides reliable refractive index and salinity readings of total dissolved solids of aqueous solutions.

The Waterbox Aquariums® Refractometer is ideal for measuring salinity in saltwater aquariums. Whether monitoring your aquarium's salinity or mixing a new batch of saltwater, a refractometer is a must-have for every saltwater aquarium owner.

Designed for Saltwater Aquariums

A common mistake hobbyists make is purchasing a refractometer designed to measure salinity in brine. Using the incorrect Refractometer will give you incorrect readings. Our Refractometer is designed to measure seawater and will provide accurate readings whether you are testing your aquarium or a new batch of saltwater

Features

Designed specifically for measuring seawater
Dual measurements in SG or PPT
Integrated Automatic Temperature Compensation
Includes case, dropper,