Accurate, reliable water test equipment is vital to a healthy, successful marine aquarium. Easy to read and simple to operate, Instant Ocean's Hydrometer delivers precise full-range salinity and specific gravity readings.
- Ideal for use in water temps of 68-85 degrees F
- Durable, permanent needle mount
- Easy-read, 2-color scale with safe zone
- Extra-wide stabilizer base
- Easy-fill convenience - no wet hands!