Automated fluid handling system

1. An automated liquid chromatography system comprising:

a housing unit comprising an external surface and two or more fluid handling unit receiving positions arranged in a two dimensional array on the external surface of the housing unit; and

multiple fluid handling units corresponding in size and shape to the two or more fluid handling unit receiving positions, wherein at least one of the multiple fluid handling units when arranged in a corresponding fluid handling unit receiving position comprises (1) an external section that is external to the housing unit, and (2) an internal section that is internal to the housing unit,

wherein the external section comprises one or more fluid connectors for connecting with a fluid flow path of the automated liquid chromatography system, and the internal section comprises an enclosure with one or more air inlet openings;

wherein said automated liquid chromatography system is adapted to allow each fluid handling unit to be freely and independently positioned in any one of the fluid handling unit receiving positions of the housing unit.

2. The automated liquid chromatography system of claim 1 , wherein the two dimensional array comprises at least two rows and at least two columns.

3. The automated liquid chromatography system of claim 1 , wherein the two or more fluid handling unit receiving positions each include a connector for connecting each fluid handling unit to a system bus and wherein the fluid handling units each include a dedicated CPU allowing the fluid handling units to independently perform operations in response to instructions over a system bus.

4. The automated liquid chromatography system of claim 1 , wherein the liquid chromatography system comprises a master control unit arranged to automatically detect fluid handling units when inserted into the fluid handling unit receiving positions.

5. The automated liquid chromatography system of claim 1 , further comprising at least one dummy module.

6. The automated liquid chromatography system of claim 1 , wherein the fluid handling units include at least one pump, at least one sensor unit and at least two fluid control valves of different configurations.

7. The automated liquid chromatograph system of claim 1 , wherein the housing unit includes at least four fluid handling unit receiving positions.

8. The automated liquid chromatograph system of claim 1 , wherein the liquid chromatography system further comprises at least one expansion housing module arranged to be attached to the housing unit, the at least one expansion housing module comprising at least two fluid handling unit receiving positions.

9. The automated liquid chromatograph system of claim 1 , further comprising a master control unit that is arranged to automatically perform automatic configuration on the system.

10. The automated liquid chromatograph system of claim 1 , wherein the liquid chromatography system further comprises a pH electrode that is external to the housing unit.

11. The automated liquid chromatograph system of claim 10 , wherein the pH electrode is connected to a pH valve formed as a fluid handling unit.

12. The automated liquid chromatograph system of claim 3 , wherein each fluid handling unit receiving position includes a complementary connector for connecting a bus connector of the fluid handling unit inserted therein to the system bus.

13. The automated liquid chromatograph system of claim 1 , wherein the internal section of the at least one fluid handling unit comprises electronics, electrical components, or control means.

14. The automated liquid chromatograph system of claim 11 , wherein the pH valve comprises an integrated flow cell for in-line monitoring of pH levels.

15. The automated liquid chromatograph system of claim 1 , wherein the system further comprises a quaternary valve for automatic buffer preparation and formation of quaternary gradients formed as a fluid handling unit.

16. The automated liquid chromatograph system of claim 1 , wherein the automated liquid chromatography system comprises a first fluid handling unit receiving position of a first size, and second fluid handling unit receiving position of a second size which is different than the first size, wherein fluid handling units of the same size are interchangeable with each other.

17. An automated liquid chromatography system comprising:

a main housing unit comprising an external surface and two or more fluid handling unit receiving positions arranged in a two dimensional array on the external surface of the main housing unit;

an expansion housing unit comprising an external surface and two or more fluid handling unit receiving positions adjacent to the external surface of the main housing unit; and

multiple fluid handling units corresponding in size and shape to the two or more fluid handling unit receiving positions of the main housing unit and the two or more fluid handling unit receiving positions of the expansion housing unit, wherein at least one of the multiple fluid handling units when arranged in a corresponding fluid handling unit receiving position comprises (1) an external section that is external to the main housing unit or the expansion housing unit, and (2) an internal section that is internal to the main housing unit or expansion housing unit,

wherein said automated liquid chromatography system is adapted to allow each fluid handing unit to be freely and independently positioned in any one of the fluid handing unit receiving positions of the main housing unit or the expansion housing unit.

18. The automated liquid chromatograph system of claim 17 , wherein the external section of the fluid handling units comprises one or more fluid connectors for connecting the fluid handing units arranged in the fluid handling unit receiving positions to a fluid flow path of the automated liquid chromatography system, and the internal section of the fluid handling units comprises an enclosure with one or more air inlet openings.

19. The automated liquid chromatography system of claim 17 , wherein the fluid handing units each include a dedicated CPU allowing the fluid handing units to independently perform operations in response to instructions over a system bus.

20. An automated liquid chromatography system comprising:

a housing unit comprising an external surface and two or more fluid handling unit receiving positions arranged in a two dimensional array on the external surface of the housing unit; and

multiple fluid handling units corresponding in size and shape to two or more fluid handling unit receiving positions, wherein at least one of the multiple fluid handing units when arranged in a corresponding fluid handing unit receiving position comprises (1) an external section that is external to the housing unit, and (2) an internal section that is internal to the housing unit,

wherein the external section comprises one or more fluid connectors for connecting with a fluid flow path of the automated liquid chromatography system;

wherein the multiple fluid handing units are arranged to be inserted into a fluid handling unit receiving position of the same size and shape from the external surface of the housing unit and are attached into position by a retaining element accessible from the external surface of the housing unit to allow the fluid handling unit to be readily exchanged with other fluid handling units of the same size and shape from the external surface of the housing unit; and

wherein said automated liquid chromatography system is adapted to allow each fluid handling unit to be freely and independently positioned in any one of the fluid handing unit receiving positions of the housing unit.

21. The automated liquid chromatography system of claim 20 , wherein the internal section comprises an enclosure with one or more air inlet openings.