The ChiraLyser is a high performance Optical Rotation Detector for monitoring Optically Active compounds in HPLC. Innovative flow cell design in multi path technology together with an optimized measuring wavelength performs outstanding sensitivity and excellent signal to noise ratio. The approved Faraday Compensation, superior to all other methods, enables the ChiraLyser to detect optical active molecules not only in analytical but also in preparative LC. Operation via touch screen or remote controlled by host computer adapts the ChiraLyser to any chromatography system.