Digital Seawater Refractometer



VEE GEE Scientific Portable Digital Refractometers deliver digital accuracy and high-end features for specific applications. Digital seawater refractometers can be used to measure salinity in the aquatics industry.                                                                                           

Package Includes:

  • Digital refractometer (Model MDX-202)
  • Rubber grip & prism cover
  • Hard shell case with protective lining
  • Disposable pipet
  • Battery
  • User manual                                                                                                                                                                                                                                                 

Key Features:

  • Includes 4 scales (Salinity, Chlorinity, Specific Gravity, & Refractive Index)
  • Compact & lightweight
  • Removable grip & prism cover for easy cleaning
  • Continuous loop read features (15 reads)
  • Automatic Temperature Control
  • Zero with distilled water
  • IP67 rating for detecting unit, IP65 for remainder
  • 589.3nm LED
  • Stainless steel prism well
  • °C/°F switchable temperature display
  • 1 Year Warranty


Scale 1 Type Salinity
Scale 1 Range 0 to 100 ppt
Scale 1 Resolution 1 ppt
Scale 1 Accuracy ±2 ppt
Scale 2 Type Chlorinity
Scale 2 Range 0 to 57 ppt
Scale 2 Resolution 1 ppt
Scale 2 Accuracy ±2 ppt
Scale 3 Type Specific Gravity
Scale 3 Range 1.000 to 1.075
Scale 3 Resolution 0.001
Scale 3 Accuracy ±0.002
Scale 4 Type Refractive Index
Scale 4 Range 1.3330 to 1.4200 nD
Scale 4 Resolution 0.0001 nD
Scale 4 Accuracy ±0.0003 nD