A reliable, manual alternative to digital salinity testers trusted by reef hobbyists for consistent accuracy.

Easy to Read Dymax RF-20 Sea Water Refractometer

Salinity refers to the amount of salt concentration in water. Different salt content in the solution results in different refractive indexes, which are also known as salinity readings.

The Dymax RF-20 Refractometer is a device that measures the salinity of salt content in water by using a mathematical algorithm to calculate the measured refraction against its concentration for a specific liquid. This device is made of high-quality anti-corrosion material, providing reliability and instant, accurate salinity readings due to its high-resolution display, designed for the relevant range of reef aquariums.

Features:

• Instant Salinity Reading
• Quality Corrosive Resistant Materials
• Maximum Accuracy
• High-Resolution Display 

Includes:

• Refractometer
• Calibration Screwdriver
• Pippet
• Calibration Solution
• Cleaning Cloth

Add Calibration Solution for Accurate Readings (+$22.99)