Instant Ocean Hydrometer is accurate, reliable water test equipment is absolutely vital to creating and sustaining a healthy, successful marine environment.
Accurate to 0-001
Durable, Permanent Needle Mount
Easy-Read, 2-Color Scale with Safe Zone
Extra-Wide Stabilizer Base
Easy Fill convenience -- NO WET HANDS!
Easy to read and simple to operate, the Instant Ocean Hydrometer delivers precise full-range salinity and specific gravity readings - accurate to 0.001 - and does it each time, every time.

IDEAL FOR USE IN WATER TEMPS OF 68 - 85 F