A refractometer measures the extent to which light is bent （i.e. refracted） when it moves from air into a sample and is typically used to determine the index of the refraction（aka refractive index or n） of a liquid sample.
The refractive index is a unit-less number, between 1.3000 and 1.7000 for most compounds, and is normally determined to five-digit precision. The refractive index is commonly determined as part of the characterization of liquid samples, in much the same way that melting points are routinely obtained to characterize solid compounds. It is also commonly used to：
* Help identify or confirm the identity of a sample by comparing its refractive index to known values.
* Assess the purity of a sample by comparing its refractive index to the value of the pure substance.
* Determine the concentration of a solute in a solution by comparing the solutions refractive index to a standard curve.
The CB-11110 Digital Abbe Refractometer can be used widely in petroleum, chemical, pharmaceutical, sugar refining and food industries, as well as in colleges, universities and scientific research institutions for measuring the refractive index nD of transparent or sub-transparent liquid and solid substance. It also can be used to measure the Brix(BX) of the sugar solution, and to correct the affect of temperature on the Brix automatically.
◆ Visual aim and LCD display
◆ Correct automatically effection of temperature on the Brix.
◆ Prism is made of hard glass
◆ RS232 interface
Measurement range（refractive index：1.3000－1.7000
Measurement precision（refractive index：±0.0002 Concentration ±0.1%
Min. reading（refractive index）： 0.0001 Concentration 0.1%
■ Range of temperature correction ：59°F~113°F (15℃～45℃)
■ Display scope of temperature： 0~122°F (0～50℃)
■ Weight of instrument：22.05lbs (10KG)
■ Size：13x7.09x15inches (330mm×180mm×380mm)