Instant Ocean SeaTest Hydrometer

Instant Ocean Hydrometer`s new improved design delivers precise full-range salinity and specific gravity readings - accurate to 0.001 - every time. Easy-fill convenience keeps hands dry when filling. It has a durable, permanent needle mount and easy-read 2-color scale with "safe zone" and an extra-wide stabilizer base.


  • Durable, Permanent Needle Mount 
  • Easy-Read, 2-Color Scale with Safe Zone 
  • Extra-Wide Stabilizer Base 
  • Easy-Fill Design - No Wet Hands


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