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