US 4,286,456 AGranted

Gas chromatographic chamber

AssigneeCarlo Erba Strumentazione S.p.A.

InventorsGiorgio Sisti, Ermete Riva, Learco Sala

Life of this patent

Estimating the term…

Loading patent…

Abstract

A gas chromatographic chamber in the form of an oven is disclosed, including an outer envelope including insulated walls defining the chromatographic chamber which can be made air tight, an inner housing section within that chamber for housing the chromatographic column, and including an air distributor to maintain the uniform distribution of air within the inner housing section, as well as a heater to heat the air therein, non-thermally insulating partitions within the chamber and spaced from the insulated wall to provide a pneumatically insulated space between the insulated walls and the inner housing section, and a fluid circulator to create the controlled circulation of fluid within the pneumatically insulated space to effect the temperature within the inner housing section.

Claims9

Dependent claims

A gas chromatographic chamber comprising an outer envelope including insulated wall members defining said chamber which may be closed in an air-tight manner, an inner housing section within said chamber, said inner housing section adapted to include at least one chromatographic column and including inner housing section air distribution means for maintaining a uniform distribution of the air within said inner housing section and inner housing section heating means for heating the air within said inner housing section, non-thermally insulating partition means within said chamber and spaced from said insulated wall members so as to provide a pneumatically insulated space between said insulated wall members and said inner housing section, said non-thermally insulating partition means defining said inner housing section, and circulation means for creating a controlled circulation of fluid within said pneumatically insulated space so as to affect the temperature within said inner housing section.

Dependencies are inferred from the claim text.