System for verifying the calibration of a turbidimeter

摘要

A system is described for verifying the calibration of a turbidimeter having a light source and a detector for scattered light. A first polarizer is positioned in the path of the light beam, and a second polarizer 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.