ATAGO 3830 Offers
Features

Prism is made of highly durable optical glass to prevent scratching
Automatic temperature compensation (ATC)
Metal sample stage allows the sample temperature to conform quickly and evenly to the prism temperature for accurate measurements
Sample size is just 2-3 drops
Measurement time is just 3 seconds
Calibrate with water, no more standard solutions
Can be cleaned under running water
IP65 water resistant
Large, easy-to-read LCD
Ergonomically designed for one-handed operation