Features:With highly efficient and accurate, the salinometer has measuring range of 0~199.9ppt and +/- 2%F.S accuracy.Lightweight and portable, its high precision LCD displays the measurement result clearly.The simple designed salinity meter is easy to operate, and measure your water quality within seconds.Easy to calibrate with the included small screwdriver.For measuring water quality in pools and aquariums, widely use in the industrial areas, agricultural production and marine aquaculture industry, etc.Specifications:Material: ABSRange: 0~199.9pptResolution: 0.1pptAccuracy: 2%F.SPower Supply: 4 * LR44 button battery (NOT included)Temperature Compensation: 0~50COperating Temperature: 0~50CItem Size: 165 * 50 * 28mm / 6.49 * 1.97 * 1.10inItem Weight: 56g / 1.97ozPackage Weight: 133g / 4.69ozPackage Size: 25 * 10.5 * 5cm / 9.84 * 4.13 * 1.97inPackage List:1 * Salinity Meter1 * Slotted Screwdriver1 * Manual (English)