Refractometer Calibration Standard (60ml)

Aquatic Cove Verified independent store

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Refractometer Calibration Standard is a precision-blended solution used to accurately calibrate refractometers and hydrometers for measuring salinity in marine aquariums. Designed specifically for saltwater and reef aquarium applications, this calibration standard is set to 35 parts per thousand (ppt), the natural salinity level of seawater. Show more