1. Material and durability - Salinity meter built with an aluminum body for lightweight strength and wear resistance. - Rubber handle is non-slip, soft and comfortable for steady handling. 2. Portable and easy to carry - Handheld, compact design for convenient one-handed use. - Small size allows quick salinity measurement on site or in the field. 3. Easy to use - Place the sample on the main prism, close the panel, and hold the refractometer up to the light. - Read the salinity directly through the eyepiece for fast, straightforward measurements. 4. ATC function for reliable accuracy - Automatic temperature compensation enhances measurement accuracy. - Delivers high precision readings and is more reliable than a traditional hydrometer. Performance and advantages - Provides precise salinity readings with temperature compensation for consistent results. - Durable aluminum construction with a comfortable, non-slip grip supports repetitive use in various environments. - Compact and portable design enables on-location testing in laboratories, aquariums, marine environments, and fieldwork. Use scenarios - Aquarium and marine hobbyists: quickly check the salinity of seawater or reef tank samples to maintain stable aquaria conditions. - Field measurements: test salinity of seawater, brine, or saline solutions during coastal or outdoor water sampling. - Laboratory or food processing: monitor salinity in brine or saline solutions to support quality control and formulation procedures.