Solute concentration measurement device and related methods
First Claim
1. A method comprising, providing a combination, the combination comprising:
- an exchange chamber;
a sensing chamber containing a compressible fluid;
a filter membrane configured to provide selective fluid communication between a sample solution and the exchange chamber when the filter membrane is in fluid communication with the sample solution, the filter membrane substantially impermeable to a solute contained in the exchange chamber;
a movable separator configured to separate the exchange chamber from the sensing chamber; and
a pressure sensor adapted to measure a pressure of the compressible fluid in the sensing chamber.
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Accused Products
Abstract
A solute concentration measurement device is disclosed. The device may comprise a filter membrane, an exchange chamber, a sensing chamber, a separator, and a sensor. The device may be configured to be placed in fluid communication with a sample solution containing a solute and a solvent. The filter membrane may provide selective fluid communication between the solution and the exchange chamber. The separator may separate the exchange chamber from the sensing chamber and cause a change in a condition of the sensing chamber corresponding to a change of a condition of the exchange chamber. The sensor may sense the condition pertaining to the sensing chamber and calculate the concentration of the sample solution corresponding to this change.
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Citations
20 Claims
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1. A method comprising, providing a combination, the combination comprising:
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an exchange chamber; a sensing chamber containing a compressible fluid; a filter membrane configured to provide selective fluid communication between a sample solution and the exchange chamber when the filter membrane is in fluid communication with the sample solution, the filter membrane substantially impermeable to a solute contained in the exchange chamber; a movable separator configured to separate the exchange chamber from the sensing chamber; and a pressure sensor adapted to measure a pressure of the compressible fluid in the sensing chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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placing a solute concentration measurement device comprising a housing having disposed therein at least an exchange chamber, a sensing chamber containing a compressible fluid and having a pressure sensor adapted to measure a pressure of the compressible fluid, a filter membrane substantially impermeable to a solute in the exchange chamber and a movable separator disposed between the exchange chamber and the sensing chamber into fluid communication with a sample solution; measuring the pressure of the compressible fluid in the sensing chamber; and using the measured pressure in the sensing chamber to calculate the concentration of the solute in the sample solution. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification