Heathrow Scientific 48202 Digital Refractometer, MDX-202, Seawater/Salinity, 4 scales

Digital Seawater Refractometer delivers quick, digital accuracy with high-end performance features like automatic temperature compensation (ATC) and continuous loop average readings. It has easy operation with a large digital LCD display that shows all of the needed data on screen and yields quick results.
The 4 scales included in this digital refractometer (salinity, chlorinity, specific gravity, and refractive index) can be used in a wide variety of applications including water/wastewater, aquatic, and aquaculture. This Digital Refractomer also comes with a 1-year warranty and includes a hard shell case with protective lining, rubber grip & prism cover, disposable transfer pipette, AAA battery, and instruction manual.

Features:
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
Salinity Range: 0 to 100 ppt
Chlorinity Range: 0 to 57 ppt
Specific Gravity Range: 1.000 to 1.075
Refractive Index Range: 1.3330 to 1.4200 nD

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