Abbe Refractometer-cfm-facilities

Abbe Refractometer

Abbe refractometer is a widely used bench-top device for the high-precision measurement of an index of refraction. Refractive index is an important optical constant used to determine the optical performance of the material. Working principle of Abbe refractometer is based on critical angle. Sample is put in between two prisms, measuring and illuminating prisms. Light enters into the sample from the illuminating prism, gets refracted at critical angle at the bottom surface of measuring prism, and then the telescope is used to measure position of the border between bright and light areas, from which the refractive index of the material will be obtained.

Specifications:

Make : ATAGO, NAR-4T
Range : 1.4700 to 1.8700
Accuracy: ±0.0002
Temperature range: 5 to 50ﾟC

Research Focus:

• To identify the sample by comparing its refractive index to known values
• Assess the purity of the sample by comparing its refractive index
• To find the thickness of the film using refractive index