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US 2010/0086443 A1Published application
Flow Rate Control
AssigneeEksigent Technologies, LLC
InventorsDavid W. Neyer, David J. Rakestraw, Jason E. Rehm
Life of this patent
Estimating the term…
Abstract
A liquid sample is prepared at a preparation site and then processed, e.g. in an HPLC column. The sample is prepared and conveyed to the device at a flow rate which is substantially less than the flow rate through the device. The different flow rates are preferably provided by variable rate working fluid supplies which drive the sample from the preparation site and through the device.
Claims17
-10. (canceled)
An apparatus for processing a liquid sample comprising:
- a) a sample source;
- b) a sample preparation site for receiving the sample from the sample source;
- c) a processing device for processing a sample of a desired size at a processing rate;
- and
- d) a controller for causing the sample to be displaced from the sample preparation site to the processing device at a loading rate that is substantially less than the processing rate during at least part of the flow of the sample from the sample preparation site to the processing device.
2 more elements
An apparatus for processing a liquid sample comprising:
- a) a sample source;
- b) a sample preparation site for receiving the sample from the sample source;
- c) a processing device comprising a micro liquid chromatography column with an internal diameter of not more than 2 mm for processing a sample of a desired size at a processing rate;
- d) a controller for causing the sample to be displaced from the sample preparation site to the processing device at a loading rate that is less than 0.75 times the processing rate during at least part of the flow of the sample from the sample preparation site to the processing device;
- and
- e) a variable pressure source.
3 more elements
Dependencies are inferred from the claim text.