Handheld Refractometer Sea Salt Salinity Meter 0–10% (available with or without box) reading mode IP67 waterproof and dustproof: Marine‑rated

IP67 waterproof and dustproof: Marine‑rated protection means it can weather rain

For best results during installation and to ensure precise toe alignment

Increases horsepower and Prolongs your engine life Includes Hoses

reliable install – comes with a wiring harness and on/off switch for a straightforward

Whether you're kayaking

Handheld Refractometer Sea Salt Salinity Meter 0–10% (available with or without box) reading mode IP67 waterproof and dustproof: Marine‑ratedThe Optical Salinity Refractometer is a precision tool for measuring salt concentration and density in seawater, aquariums, brine solutions, and low sugar liquids. With an ATC feature, it delivers reliable readings without being affected by temperature changes. Ideal for aquarium hobbyists, mariculture breeding, laboratories, and food & beverage industries, this refractometer helps ensure marine life health, optimize fluid concentrations, and improve