Please confirm that JavaScript is enabled in your browser. There are two basic designs for a typical dispersive type spectrophotometer, the single beam and the double beam type instrument. The monochromator of the instrument is composed of an entrance slit to narrow the beam to a usable size , a dispersion device usually a diffraction grating or prism that separates polychromatic white light into bands of monochromatic light of a single wavelength , and an exit slit to select the desired monochromatic wavelength. Many light sources meet some of the requirements on this slide, but no light source can meet them all. Many spectrophotometers switch between a halogen lamp for the visible range and a deuterium lamp for the ultraviolet range according to the wavelength setting.

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It is particularly useful in sulfur recovery units, as the UV sensing is unaffected by water and carbon dioxide interferents. A reliable, integrated photometric spectrometer capable of measuring multiple analytes. A field-proven, highly reliable ultraviolet spectroscopy analyzer designed for sulfur recovery tail gas applications.

UV-Vis spectrophotometric analysis and light irradiance through hot-pressed and hot-pressed-veneered glass ceramics. This study evaluated the irradiance of curing units through core and veneered hot-pressed ceramics as well as the transmittance of these materials. Discs of 0. For E2, two of the 0.