The General Purpose Optical Bench (GPOB) accessory is compatible with the LAMBDA 650/850/850+/950/1050/1050+ spectrometers. The GPOB comes with either a PbS detector (PELA1003) or an InGaAs detector (L6020328). Also available are a variety of optical kits that expand GPOB analysis. Features and benefits of this unique accessory: The GPOB specializes in the measurement of difficult or irregular samples. It enables custom optical measurement configurations using a magnetized, ruled optical bench with a movable 60 mm integrating sphere. Typical configurations include transmittance measurements of large laser crystals or telephoto lenses, variable-angle transmittance and reflectance studies of large glass samples, and beam splitter characterization. It can accommodate samples up to 400 mm in pathlength. Wavelength range is 1902500 nm.