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[Resun] Hydrometer Salinity Tester
[Resun] Hydrometer Salinity Tester

[Resun] Hydrometer Salinity Tester

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Measure Salinity for Freshwater / Goldfish / Brackish / Marine Aquarium.

Makes measurement of salinity / salt levels in your aquarium fast and easy. Just fill with aquarium water and read the levels. 


  • Patented design with filter sponge at the inlet to efficiently eliminate the dirt in marine water
  • Patented water channel to avoid bubbles from attaching to the pointer to improve the accuracy
  • The inlet is lower than the outlet to facilitate taking water from the tank


Specific Gravity of 1.000 - 1.032.