salinometer
/ˌsælɪˈnɑmɪtər/
noun
- An instrument used to measure the salt content (salinity) of a liquid, especially water.
- A salinometer is essential for monitoring the quality of drinking water in coastal areas.
- Before releasing the fish, the aquarium staff tested the tank with a salinometer.
- The marine biologist used a salinometer to check the salt level in the ocean water.