| 摘要 |
<p>A system is described for verifying the calibration of a turbidimeter (10) having a light source (12) and a detector (14) for scattered light. A first polarizer (16) is positioned in the path of the light beam, and a second polarizer (18) is positioned between the first polarizer and the detector. The first polarizer linearly polarizes the light beam and the second polarizer restricts the amount of light passing through it to reach the detector.</p> |
