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Wyatt Technology announces the introduction of a new multi-angle light scattering detector, the DAWN(R) EOS (Enhanced optical system). Based on Wyatt's traditional multi-angle light scattering detectors, the EOS is an 18-angle light scattering detector for absolute molecular weight and size determinations of polymers and biopolymers. It may be connected in series to any chromatograph fractionation system in order to determine absolute molar masses without the use of reference standards or column calibration.

The instrument incorporates a special 30mW gallium arsenide laser operating at a wavelength of 690 nm. This laser, together with its unique optical collimator, produces light-scattering signals comparable to those obtained with an argon-ion laser. The EOS uses Wyatt Technology's patented laser stabilization electronics and a proprietary optical system to create a beam with intensity stability and spatial mode purity that rivals the best gas lasers. The combination of the increased power of the EOS laser system, precision amplifiers and on-board 16-bit Digital Signal Processing chips ensures that signal resolution is preserved even at very low sample concentrations.