1.Measure salinity quickly and accurately with our handheld refractometer for marine survey, water quality monitoring, and fish culture. 2.Made with glassprism for precise measurements and adjustable eyepiece for clear readings ensuring reliable results every time. 3.Designed for professionals in agriculture, industry, and research for mariculture, aquarium enthusiasts, and processing applications. 4.Take our portable salinometer you need to measure salt concentration from the to your own backyard. 5.Experience the convenience of automatic temperature compensation and easy operation, making salinity measurement a breezefor anyone.