CALIBRATION VERIFICATION SYSTEM FOR TURBIDIMETER

摘要

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. T he first polarizer linearly polarizes the light beam and the second polarizer restricts the amount of light passing through it to reach the detector.