Feature: 1. PORTABLE DESIGN: The electronic salinity meter is compact, easy to carry and use, suitable for kitchen food, brine and aquaculture salinity testing. 2. EASY TO USE: The salinity meter comes with a digital electronic display, which intuitively shows the salinity data, simple and convenient to use. 3. MEASURING RANGE: The average salt concentration of seawater is 3.5%. This salt tester can measure salinity up to 19.90% or 199,000 ppm, allowing you to measure salt in almost any environment. Better than regular refractometers and pool salt test strips! 4. WIDE APPLICATIONS: This salinity tester will help you measure salt concentration in any environment, from aquariums, fish tanks and ponds to drinking water and soup. 5. WORKING TEMPERATURE: The salinity tester has automatic temperature compensation and a wide working range, it can work stably in the environment from 0°C to 50°C. Specification: Item Type: Salinity Tester Measurement Range: 0-19.9‰ Resolution: 0.1‰ Accuracy: ±2% Full Scale Operating Temperature: 0°C-50°C Battery: 4 x AG13 Cell Batteries (Batteries not included) Weight: Approx. 128.00g / 4.52oz. Package List: 1 x Salinity Tester 1 x Accessories 1 x User Manual 1 x Storage Box