Test concentration of salt in several aquariums with this portable, economical, and lightweight refractometer. Featuring the same accuracy as more expensive models, this optical device provides a direct reading of specific gravity and salinity in water. Requires no batteries and automatically compensates for temperature.
Temperature Correction: Automatic from 50-86°F (10-30°C)
Warranty: 6-month manufacturer's warranty.
Pinpoint 53.0 mS Calibration/Reference Fluid sold separately.
Please click on "More Information" for maintenance instructions.