Refractometer for fluids
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United States of America Patent
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-
Feb 21, 1989
Issued Date -
N/A
app pub date -
Oct 14, 1986
filing date -
Jan 5, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided an apparatus for measuring the refractive index of fluids. The apparatus comprises a substantially U-shaped sensor rod made of a transparent material and is submersible in the fluid. The bent portion of the sensor rod has a diameter of curvature at least two times larger than the diameter of the sensor rod, and chosen so as to optimize sensitivity for a given range of indices. The two ends of the U-shaped sensor rod are connectable to a housing and a light source inside the housing has optical access to the face of one of the sensor-rod ends. A light detector means also disposed inside the housing has optical access to the face of the other one of the sensor rod ends.
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