The Perkin-elmer Corporation

Raymond P Scott

Elena Katz

John Girdner Atwood

Gary J Schmidt

Charles C Helms

Kenneth L Ogan

A light absorption detector includes a light source substantially adjacent a window of a chromatogrpahic flow cell. The flow cell is defined by a housing member which also includes a photo-sensitive detector.

Light detector apparatus

A fluid conduit including a tube having a two-dimensional serpentine opening therethrough and exhibiting low peak dispersion is applicable as an extra-column connection.

Low dispersion fluid conduit useful in chromatography systems

It has been discovered that a glass envelope at elevated temperature containing a noble gas will result in electrons being evolved. The phenomenon has been employed to construct both argon and helium detectors for gas chromatography.

Ionization detectors for gas chromatography

An apparatus for modifying the temperature of the effluent of a fluid stream entering a flow cell which includes a counterflow heat exchange between the outlet fluid and the inlet fluid and a thermally equilibrating the flow cell with the inlet fluid after it has passed through the counterflow heat exchange and before it enters the flow cell.

Sample cell temperature stabilizer

An apparatus for equilibrating the temperature of the eluate of a separating column entering a flow cell includes the provision of a heat transfer relationship between the outlet fluid and the inlet conduit whereby the temperature of the fluid, as it passes through the flow cell, is stabilized.

A detector assembly includes means for determining the fluorescence characteristics, the ultraviolet absorbance characteristics and the electrical conductivity characteristics of a single sample of an eluate of a chromatographic separating column.

Multifunctional detector

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.

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Wilton, CT, United States of America

Raymond P Scott