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