Boston University

The Perkin-elmer Corporation

Kenneth L Ogan

Raymond P Scott

Elena Katz

An apparatus useful in identifying a solute includes a microbore separation column having unusually large particle packing making up the bed thereof. In addition, the microbore column is excessively long compared to conventional columns. Preferably, the column is thermally stabilized.

Apparatus useful in identifying a solute

A spectrometer capable of providing a predetermined wavelength of output light in accordance with a control voltage signal applied to a scanning element is described. The scanning element located at the grating image of the spectrometer is a small mirror attached to the rotor of a galvanometer whose angular position is accurately controlled by a closed-loop electronic control. The spectrum reflected from the mirror is passed through a slit to provide the output light of a predetermined wavelength. Selection of the waveform of the control signal allows the spectrometer to be operated as a dual wavelength spectrometer, to use a linear wavelength scan, or other wavelength scan patterns for absorbance analyses of a sample. The rapid scan capability of this instrument has been utilized to extend the measurement of absorbance changes at one wavelength, corrected for light scattering changes (dual-wavelength spectroscopy), to the measurement of the complete differential absorbance spectrum, similarly corrected for light scattering changes (corrected-differential spectroscopy).

Growing community of inventors

Bethel, CT, United States of America

Kenneth L Ogan