Method and device for measurement of an event with reagents under partial equilibrium using thermal sensors

• US 20060002447A1
• Filed: 07/05/2005
• Published: 01/05/2006
• Est. Priority Date: 07/02/2004
• Status: Abandoned Application

• Current Assignee: TTP Labtech Limited
• Original Assignee: TTP Labtech Limited
• Inventors: Verhaegen, Katarina
• Application Number:
  US11/175,579
• Publication Number:
  US 20060002447A1
• Time in Patent Office: Days
• US Class Current: 374/10
• CPC Class Codes: G01K 17/00 Measuring quantity of heat measuring temperature by calorimetry G01K3/00 - G01K11/00; specially adapted for measuring thermal properties of materials, e.g. specific heat, heat of combustion G01N
• CPC Class Codes: G01N 25/4846 for a motionless, e.g. solid sample

Abstract

The present invention provides a method for measuring the heat of an event between at least two samples being in partial equilibrium. By allowing the samples to first establish a partial equilibrium, the background noise coming from chemical non-equilibrium between components, e.g. buffers, of the samples can be minimised and hence, the signal to noise ratio of the signal that is measured may be improved.

Claims

1. Method for measuring heat generated by an event between at least two samples, the method comprising:

providing at least a first sample comprising first components and first reagents of interest and at least a second sample comprising second components and second reagents of interest, the first sample and the second sample being separated by a selective wall,

allowing establishment of a partial equilibrium between the first components and the second components through the selective wall,

applying a stimulus to the selective wall for allowing occurrence of an event between the first reagent of interest and the second reagent of interest, and

measuring heat generated by said event.

2. A method according to claim 1, wherein applying a stimulus to the selective wall is performed by any of a magnetic force, laser cutting, a gravitational and/or rotational force or a thermal load.

3. A method according to claim 1, wherein applying a stimulus to the selective wall is performed by adding a chemical reagent to at least one of the first or second sample for at least partially removing the selective wall.

4. A method according to claim 1, wherein applying a stimulus to the selective wall causes a change in properties of the selective wall.

5. A method according to claim 1, wherein applying a stimulus to the selective wall causes the selective wall to be partially or completely removed.

6. A method according claim 1, the selective wall comprising a removable part, wherein applying a stimulus to the selective wall causes a release of said removable part.

7. A method according to claim 1, wherein providing at least a first sample and at least a second sample is performed by providing a first inner compartment comprising at least said first sample and said second sample, the first and second samples being separated by a selective wall.

8. A method according to claim 7, wherein applying a stimulus to the selective wall is performed by:

providing a second outer compartment over the first inner compartment, the second outer compartment comprising at least one second elongate member, and

moving said at least one elongate member for rupturing the selective wall.

9. A method according to claim 8, wherein providing a second outer compartment comprises providing a second outer compartment comprising a first and a second elongate member located such that when the second outer compartment is put over the first inner compartment the first elongate member is positioned at a first side of the selective membrane and the second elongate member is located at a second side of the selective membrane.

10. A device for measuring heat generated by an event between at least two samples, comprising:

a first compartment for comprising a first sample comprising first components and first reagents of interest,

a second compartment for comprising a second sample comprising second components and second reagents of interest,

a selective membrane separating the first compartment from the second compartment and allowing establishment of a partial equilibrium between the first components and the second components,

means for applying a stimulus to the selective membrane for allowing occurrence of an event between the first and second reagents of interest, and

means for detecting heat generated by the event between the first and second reagents of interest.

11. A device according to claim 10, wherein the first compartment is a hydrophilic channel.

12. A device according to claim 10, wherein the second compartment is a hydrophobic channel.

13. A device according to claim 11, wherein the second compartment is a hydrophobic channel.

14. A device according to claim 10, wherein the second compartment comprises a tube for containing drops of said second sample.

15. A device according to claim 14, wherein the first compartment comprises a recipient.

16. A device according to claim 10, wherein the selective wall is a selective membrane.