Salinity Tester Sea Specific Gravity Test for Fish Tank Pond Water Saltwater Freshwater Accurate

Safe Material:Made of High quality plastic,aquarium clear Automatic Accurate Readable SaltWater Hydrometer. Accurate, durable, and easy to read your marine aquarium's salt level and specific gravity,Small and waterproof. Clearly Safe Zone Indicated:Includes solinity and specific scales.The outside rang of scale indicates salinity(PPT).The inside range of scale indicates gravity. Fit for brackish and marine aquariums.Perfect for testing both salinity and specific gravity of your brackish and marine tank. Easy to Read and Use:The easy-to-read swing-arm pointer and extra wide stable base provide an accurate test result. Color: As Pic Shown Size: Approx. 24*14.5*3mm Packing List:1 x Hydrometer