The SCL101 spectral calibration source comes in 6 lamp models: Argon (Ar), Krypton (Kr), Mercury (Hg), Mercury/Argon (Hg/Ar), Neon (Ne), and Xenon (Xe). These sources can be used for wavelength calibration of monochromators, spectrometers and spectroradiometers. By exciting these various gases, they will produce narrow intense lines of the corresponding element(s). This light source comes with a 9V DC power supply and features an SMA905 connector for fiber optic light coupling with no need for fiber alignment.