Instant Ocean SeaTest Hydrometer
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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. Ideal for use in water temperatures of 68 - 85°F.
- Quickly, easily, and accurately measure your marine aquarium's salt level and specific gravity with Instant Ocean Hydrometer
- Full range scale features easy to read markings with safe zone clearly indicated