Salinity Refractometer with ATC Dual Scale Saltwater Specific Gravity Meter

Keep salt levels confidently in check with a compact tool built for quick, dependable testing. The RZ118 saltwater salinity meter measures both NaCl concentration and specific gravity, making it practical for aquariums, marine applications, food preparation, research, and more. Built-in Automatic Temperature Compensation from 10–30°C helps maintain reliable readings as conditions change. Its direct-reading dual scale, adjustable focus, and soft rubber eyepiece make everyday testing simple and comfortable. Better still, this aquarium refractometer works with ambient light, so no batteries or external power are needed.

Key Features

• 2-in-1 measurement for salinity and specific gravity from one convenient instrument.
• Built-in ATC refractometer technology compensates for temperature changes between 10–30°C.
• Direct-reading scale and adjustable manual focus help make measurements quick and easy to interpret.
• Lightweight, durable handheld design with a comfortable rubber eyepiece and battery-free operation.
  
  

Why Choose Our Salinity Refractometer?

Unlike single-purpose testers, the RZ118 combines NaCl concentration and specific gravity measurement in one portable device. Its automatic temperature compensation and battery-free optical design mean fewer complications whether you're testing at home, in the field, or in a laboratory.

Perfect For

• Saltwater and marine aquariums
• Fisheries, ponds, and marine environments
• Seafood preparation and food processing
• Pickling and salt-solution testing
• Laboratories, education, and oceanography research
  
  

Make Every Salinity Check Count

Take the guesswork out of saltwater testing with the RZ118 Salinity Refractometer. Order yours today for convenient, portable salinity and specific gravity measurements wherever your work takes you.