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.
82 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