Features: Highly efficient and accurate, the salinometer has a measuring range of 0–199.9 ppt with ±2% F.S. accuracy. Lightweight and portable, it features a high-precision LCD that clearly displays measurement results. The simple design makes the salinity meter easy to operate, delivering water quality measurements in seconds. Easy to calibrate using the included small screwdriver. Ideal for measuring water quality in pools and aquariums, and widely used in industrial applications, agricultural production, and marine aquaculture. Specifications: Material: ABS Range: 0–199.9 ppt Resolution: 0.1 ppt Accuracy: ±2% F.S. Power Supply: 4 x LR44 button batteries (not included) Temperature Compensation: 0–50°C Operating Temperature: 0–50°C Item Size: 165 x 50 x 28 mm Item Weight: 56 g Package Weight: 133 g Package Size: 25 x 10.5 x 5 cm Package List: 1 x Salinity Meter 1 x Slotted Screwdriver 1 x Manual (English)