Patent ID: 7551270
Filing Date: 2009-06-23
Classification: G01N

Abstract:
1. A differential refractive index detector, comprising: a light receiving element, receiving a measuring light to generate a slit image, wherein the measuring light is made to pass through a slit to reach a flow cell for being transmitted as a transmitted light, and then, by means of being reflected by a reflecting mirror, the transmitted light is made to re-transmit through the flow cell, and in the flow cell, a sample solution passes through one cell of two cells spaced apart by a spacer inclined with respect to an optical axis of the measuring light, and a reference solution passes through the other cell; a zero glass, making the slit image parallelly move on the light receiving element; a zero glass driving unit, making the zero glass rotate; and a storing portion, storing a rotating angle of the zero glass when the same solution fills up the two cells.