Differential refractive index detector

Details Differential refractive index detector Differential refractive index detector

2007-06-20

2009-06-23

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

Refraction testing

Differential

C356S131000, C210S198200, C210S656000, C073S061520, C073S061560, C073S061570

Reexamination Certificate

active

07551270

ABSTRACT:
Provided is a differential refractive index detector having a light receiving element, a zero glass, a zero glass driving unit and a storing portion, and is capable of performing purging operation thoroughly based on a unified standard. The light receiving element receives a measuring light passing through cells (S, R) to generate a slit image. The zero glass makes the slit image parallelly move on the light receiving element. The zero glass driving unit makes the zero glass rotate. The storing portion stores a rotating angle of the zero glass when the same solution fills up the two cells (S, R). When a purging operation for replacing a reference solution in the flow cell is performed, the stored rotating angle is taken as a standard value for being compared with a current rotating angle of the zero glass. If the two angles are the same, the purging operation is finished.

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