Since launching the AP-1 in 1961, JASCO has been the leading manufacturer of Spectropolarimeters for measuring Circular Dichroism (CD) and Optical Rotatory Dispersion (ORD). The development of these chiroptical spectrometers has furthered the study of optically active substances. Now, the determination of absolute molecular configuration, changes of conformation and stereochemical analysis have become rapid, routine procedures.