VILLFUL Electronic Salinometer Water for Measurement Automatic Hydrometer for Home Kitchen Aquaculture and Swimming Pools Yd

Salt water: keeping your hands clean and can prevent pollution of water from the fish pond,food hydrometer

Seawater: it is easy to read with high precision,salt water gravimeter

Refractometer saltwater tank: the pen type meter is a precision instrument for testing the value of a solution,electronic hydrometer

Aquarium hydrometers: suitable for saltwater, swimming pool, aquaculture, aquarium (seawater) and pond, food processing and products industry,meter tester

Aquarium refractometer: the proportion of water sample can be automatically detected, the proportion, and conductivity of sea water are shown once,hydrometer