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Both analog and digital handheld refractometers work according to the critical angle principle. While analog handheld refractometers require an external light source for measurement, digital refractometers use light from an internal LED light source.
Moving from manual to digital refractive index measurement
Manual methods are being replaced by digital refractometers for many reasons. Even though digital refractometers are slightly more expensive, it is a necessary investment. Some key advantages of automatic refractive index measurements include time saving, higher accuracy and repeatability, and operator independent results. These lead to improved efficiency, higher throughput, as well as trustworthy data quality.
This comparison datasheet gives a description and advantages and disadvantages for analog and digital handheld refractometers.
Find out more information by downloading our datasheet
