G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/35 (2006.01) G01N 33/15 (2006.01)
Patent
CA 2185613
In an instrument for making an NIR spectrographic transmission measurement of a pharmaceutical tablet, masking structure is provided to prevent or reduce leakage of radiation around the edge of the tablet. The masking structure (30, 44) constricts the boundary of the light beam so that it is within the boundary of the top surface of the tablet where it impinges upon the top surface. The tablet is received in a well slightly larger than the tablet formed in a tablet locator (20) An aperture (39) is formed in the bottom of the well.
Macrae & Co.
Perstorp Analytical Inc.
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