Atyhao Hydrometer Salinity Meter, 7.5x19cm Fish Tank Salt Water Meter Sea Seawater Densitometer for Aquarium

Accurate Sea Hydrometer --- Very accurate measurement readings, please rest assured to purchase. Suitable for fresh water and sea water Accurate Reading Brine --- Automatic accurate reading brine hydrometer, durable, and easy to read sea water hydrometer. Accurate Automatic Hydrometer --- This product is designed with an automatic level function, can automatically identify the level to avoid errors. Wide Range Of Applications --- Suitable for salt water and sea water fish tanks. Perfect for testing salinity and specific of saltwater and seawater tanks, including solubility and specific scales. Premium Quality --- Accurate, durable and easy to read. And each hydrometer has a laser engraved patent number.