Multi-wavelength Abbe refractometers can be used to easily determine a sample's Abbe number.
2.
Some modern Abbe refractometers use a digital display for measurement, eliminating the need for discerning between small graduations.
3.
In the late 1990s, Abbe refractometers became available with the capability of measurements at wavelengths other than the standard 589 nanometers.
4.
There are four main types of fluid refractometers : traditional handheld refractometers, digital handheld refractometers, Abbe refractometers, and inline process refractometers.
5.
There are four main types of refractometers : traditional handheld refractometers, digital handheld refractometers, laboratory or Abbe refractometers, and inline process refractometers.
6.
Then the density of the liquid is evaluated either directly by weighing or indirectly through its refractive index, which is measured with the Abbe refractometer.
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