Hardware includes the new DeSa subtractive double grating monochromator for selecting and scanning the wavelengths. This tiny 7-sided monochromator uses two huge 40 x 45 mm gratings for outstanding light throughput, even down to the lowest wavelengths. These holographically blazed gratings can be for ultraviolet, UV/Vis, visible, Vis-NIR, or NIR. All associated light sources and detectors will be selected by Olis to be compatible with this blazed grating range. The spectral resolution is 0.5-5 nm, based on the slit width used; slits are interchangeable fixed slits of 0.5, 0.6, 1.24, and 2 mm wide, with other sizes available by special request.

Substitute the DB 620 sample compartment with our DSM CD module and transform the DB 620 into a DSM 20 CD!

Download a PDF brochure on the new Hummingbird Monochromator

The default light source is 75 watt xenon arc lamp; an ozone producing 150 watt xenon arc can be substituted at slightly higher cost to achieve the lowest spectral limits (below around 180 nm). All electronics are designed by DeSa; all detection hardware is by Electronic Tubes and Olis. Electronics include two fast response photomultiplier amplifiers and twin 2 MHz 14 bit A/D converters for direct reading from two photomultiplier tubes. Olis Control Unit includes an OLIS verified and supported computer with the Intel 2.4 GHz Pentium microprocessor.

Fully XP Windows™ compatible Olis SpectralWorks software provides powerful, intelligently designed, and incredibly fast control of the apparatus as well as collection, display, analysis, and storage/ retrieval of kinetic fixed wavelength and/or spectral data. Exclusive implementation of Matheson's SVD, Downhill Simplex, and Matrix Exponentiation algorithms are provided for instantaneously fast and precise 2D and 3D data fitting. Data storage/ retrieval, including power import/export capabilities, is provided for dealing with Olis and non-Olis acquired data. All data processing routines are standard. Data storage as binary, ASCII, and Excel are standard. Customization of hardware and software is possible by Olis and owners.