The RX-9000α is a fully automatic digital refractometer with the highest level of accuracy of its kind. Designed with a wide measurement range, measurement temperature range, and highest measurement accuracy, this instrument is suitable for multiple sample types; such as measuring oils and fats with high melting points, aroma oils of high refractive index and organic solvents, meeting demands for high accuracy measurements. The RX-9000α has a built-in Peltier thermo module for maintaining a constant sample temperature while taking measurements. Manual calibration is also possible to adjust to standard liquid values and to correct differences in measurement values between instruments.