Refractometers measure refractive index, which is the optical characteristic of a substance and the number of dissolved particles in it. Refractive index is the ratio of the speed of light in empty space to the speed of light in the substance. Refractometers are often used in the beverage making process to determine sugar
LW Scientific manufactures microscopes, centrifuges, and other laboratory equipment. The company, founded in 1992, is headquartered in Lawrenceville, GA.