Features 1、The measuring range is 0‑28%, and the accuracy is 0.20%. It is easy to read and suitable for measuring the salinity of liquids. 2、Professional salinity measuring instrument, it is a portable precise optical instrument, with focus adjustment wheel, easy to measure. 3、The salinity refractometer uses high‑quality prisms, high‑definition eyepieces, non‑slip rubber sleeves, durable and corrosion‑resistant. 4、It has a wide range of applications and can be used for sampling various different reagents and is easy to operate and use. 5、Small size and portable, suitable for aquariums, ocean monitoring, agriculture, gardening, salty pools, spas, fish‑keeping, etc. Specification Item Type: Liquor Refractometer Material: Aluminum Alloy Purpose: Reagent Sampling Basic Parameters: Range: 0-28% Accuracy: 0.20% Product Size: Approx. 17.5cm / 6.9in Package List 1 x Refractometer 1 x Dropper 1 x Screwdriver 1 x Wipe Cloth 1 x Manual