Great product, easy to use
Review Details
* Precision refractometer measures salinity & specific gravity
* Easiest and most accurate way to maintain ideal salt levels
* Professional testing device at an affordable price
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.
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