Premium Quality : Accurate, and easy to read. And each hydrometer has a engraved patent number.
Wide Range Of Applications : Suitable for salt water and sea water fish . for testing salinity and specific gravity of saltwater and seawater , including solubility and specific gravity scales.
APPLICATION RANGE: The aquarium marine sea saltwater is suitable for warm water (20-30℃). A change in temperature will cause a change in the reading. Unit specific gravity is accurate to ±0.001.
Fit for brackish and marine aquariums. for testing both salinity and specific gravity of your brackish and marine .
Accurate Sea Hydrometer : Very accurate measurement readings, please rest assured to purchase. Suitable for fresh water and sea water