Best Salinity Meters of 2023
Best Selling Refractometer
The tried and true analog refractometer has long been the preferred salinity-measuring device for saltwater aquarists. It's accurate, affordable, and easy to use with minimal room for error.
Best Salinity Meter for Low Light or Those With Bad Eyes
Improving upon the classic refractometer, the BRS Refractometer with LED light has a built-in light to illuminate the prism making it easy to see your salinity measurements in low light conditions. It creates a very crisp resolution through the viewing port regardless of the light levels around the refractometer making it much easier to read for those who have trouble seeing the markings.
Most Reliable Salinity Meter / Refractometer
By far and away, the most highly regarded digital refractometer on the market, the Milwaukee Digital Seawater Refractometer is incredibly easy to use, very reliable and eliminates any guesswork when it comes to measuring salinity. The meter can provide results using specific gravity, parts per thousand, or practical salinity units. It with automatically compensate for difference in temperature and should be calibrated before each use to ensure the most accurate results.
Most Affordable Salinity Meter
The surprisingly simple and handy floating hydrometer from Tropic Marin is a great device to have on hand for any hobbyist. While it's not the most convenient device for everyday use, it's a great tool to verify the accuracy of your primary salinity meter and can come in handy when mixing up clean saltwater. Results are instantaneous and it never requires calibration.
Most Affordable Digital Salinity Meter
Easy, quick, and convenient this digital salinity pen from Hanna Instruments relies on conductivity to provide accurate salinity measurements. Simply dip the calibrated pen into a sample of seawater and results will quickly be produced with the push of a button.
Best for Affordable Monitoring of Salinity
For the ongoing monitoring of salinity directly in your display, the Marine Monitor is a great solution and will help identify when something goes wrong in your tank. In addition to salinity, you gain the benefit of real-time pH and temperature monitoring - the most fundamental parameters in any saltwater aquarium. The digital display is easy to read at a glance and you can set up audible alerts to sound when parameters fall outside a suitable range.
Best Real-time Monitoring of Salinity
For those who want to achieve the most comprehensive monitoring and control over their aquarium, there is the Neptune Systems Apex. The Apex is so much more than a salinity meter and will give you the ability to monitor salinity from anywhere in the world that has an internet connection. The Apex Pro model comes with a built-in salinity port or you can simply add the PM2 module with salinity probe to any Apex system.
Best Solution for Stability
This is a clever accessory for use with conductivity-based salinity probes and helps to eliminate air bubbles that often create unreliable readings.