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Abnaok Salinity Tester, Sea Specific Gravity Test for Fish Tank Pond Water Saltwater Freshwater, Accurate Automatic…

$10.99
Safe Material:Made of plastic,aquarium clear Automatic Accurate Readable SaltWater Hydrometer. Durable Clear Acrylic:Accurate, durable, and easy to read your marine aquarium's salt level and specific gravity,Small and waterproof.if the specific gravity between 1.000 - 1.019,show that the specific gravity is small;if the specific gravity between 1.020 - 1.023,show that the specific gravity is nomal;if the specific gravity between 1.024 - 1.030,show that the specific gravity is big; Clearly Safe Zone Indicated:Includes solinity and specific grovity scales.The outside rang of scale indicates salinity(PPT).The inside range of scale indicates gravity.And with safe zone clearly indicated.Range of use: 0-40 degrees (1.000-1.030).If the salinity ppt between 32 - 40,show that the salinity hydrometer is high;If the salinity ppt between 27 - 31,show that the salinity hydrometer is normal; If the salinity ppt between 0 - 26,show that the salinity hydrometer is light.