Differential scanning calorimetry method and apparatus
AssigneeMalvern Instruments Limited
InventorsVishal Patil, Ronan O'Brien, Edward A. Esposito, Ben E. Pattison
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Abstract
A method of determining thermal properties of a sample using differential scanning calorimetry (DSC), the method comprises injecting a first separation fluid, a sample plug, and a second separation fluid into a sample cell. The first separation fluid and the sample plug have a first separation interface, and the sample plug and the second fluid have a second separation interface. The method further comprises injecting a reference fluid into a reference cell, heating the sample cell and reference cell, and determining thermal properties of the sample using DSC analysis.
Claims20
A method of determining thermal properties of a sample using differential scanning calorimetry (DSC), the method comprising:
- injecting a first separation fluid, a sample plug, and a second separation fluid into a sample cell, the first separation fluid and the sample plug having a first separation interface, and the sample plug and the second fluid having a second separation interface;
- injecting a reference fluid into a reference cell;
- heating the sample cell and reference cell;
- and
- determining thermal properties of the sample using DSC analysis.
A method of cleaning a differential scanning calorimetry system, the system comprising a fluid in a sample cell, the method comprising:
- reducing the pressure in the sample cell to below the saturation pressure of the fluid.
A differential scanning calorimetry system comprising:
- a sample cell in thermal communication with a sample cell heater;
- a reference cell in thermal communication with a reference cell heater;
- and
- a sample injection subsystem in fluid communication with the sample cell and the reference cell;
- wherein the sample injection subsystem is operable to inject a first separation fluid, a sample plug, and a second separation fluid into a sample cell, the first separation fluid and the sample plug having a first separation interface, and the sample plug and the second fluid having a second separation interface.
A differential scanning calorimetry system comprising:
- a sample cell in thermal communication with a sampler cell heater;
- a reference cell in thermal communication with a reference cell heater;
- and
- a pressure subsystem in fluid communication with the sample cell, wherein the pressure subsystem is operable to rapidly decrease the pressure in the sample cell from at least 50 psia (340 kPa (absolute)) to 15 psia (100 kPa (absolute)) or less.
Dependencies are inferred from the claim text.