Method of forming a collapsible bag using a mold and mandrel

1. A vessel configured to contain a liquid, the vessel comprising:

a collapsible bag operative to contain the liquid;

a reusable support structure operative to support the collapsible bag;

a sensor operative to measure a parameter within the collapsible bag; and

a controller in electronic communication with the sensor and operative to introduce an antifoaming agent into the collapsible bag based at least in part on a signal received from the sensor.

2. The vessel of claim 1 , wherein the sensor is a pressure sensor and the parameter is a pressure within the collapsible bag.

3. The vessel of claim 1 , wherein the sensor is a foam sensor and the parameter is foam within the collapsible bag.

4. The vessel of claim 3 , wherein the foam sensor includes two or more foam probes and is operative to measure foam based at least in part on one or more voltages between the two or more foam probes.

5. The vessel of claim 1 , wherein the vessel is part of a biological, biochemical or a chemical reaction system.

6. The vessel of claim 1 further comprising:

a source of the antifoaming agent in fluid communication with the collapsible bag.

7. The vessel of claim 1 , wherein the antifoaming agent comprises a surfactant.

8. A method of controlling foam generated from a liquid contained in a collapsible bag, the method comprising:

containing the liquid in the collapsible bag;

supporting the collapsible bag via a reusable support structure;

measuring a parameter within the collapsible bag via a sensor in electronic communication with a controller; and

introducing an antifoaming agent into the collapsible bag via the controller based at least in part on a signal received from the sensor.

9. The method of claim 8 , wherein the sensor is a pressure sensor and the parameter is a pressure within the collapsible bag.

10. The method of claim 8 , wherein the sensor is a foam sensor and the parameter is foam within the collapsible bag.

11. The method of claim 10 , wherein measuring a parameter within the collapsible bag via a sensor in electronic communication with a controller comprises:

measuring foam based at least in part on one or more voltages between two or more foam probes of the foam sensor.

12. The method of claim 8 , wherein containing the liquid in the collapsible bag is part of a biological, biochemical or a chemical reaction process.

13. The method of claim 8 further comprising:

storing the antifoaming agent in a source in fluid communication with the collapsible bag.

14. The method of claim 8 , wherein the antifoaming agent comprises a surfactant.

15. A non-transitory computer readable medium storing instructions that adapt a controller to:

contain a liquid in a collapsible bag;

measure a parameter within the collapsible bag via a sensor in electronic communication with the controller; and

introduce an antifoaming agent into the collapsible bag based at least in part on a signal received from the sensor.

16. The non-transitory computer readable medium of claim 15 , wherein the sensor is a pressure sensor and the parameter is a pressure within the collapsible bag.

17. The non-transitory computer readable medium of claim 15 , wherein the sensor is a foam sensor and the parameter is foam within the collapsible bag.

18. The non-transitory computer readable medium of claim 17 , wherein the stored instructions further adapt the controller to measure foam based at least in part on one or more voltages between two or more foam probes of the foam sensor.

19. The non-transitory computer readable medium of claim 15 , wherein the controller forms part of a system for executing a biological, biochemical or a chemical reaction process.

20. The non-transitory computer readable medium of claim 15 , wherein the antifoaming agent comprises a surfactant.