Embossed film bioprocessing containers and integrity testing of bioprocessing containers
A testing method that includes the steps of evacuating air from a container to a negative atmospheric pressure, the container being a collapsible, flexible container, and comprising at least two opposing flexible walls, wherein a surface of at least one of the walls internal to the container comprises a plurality of channels or recessed features on said at least one wall and monitoring a mass flow or a state of vacuum so as to determine the integrity of the container. The container can be of any size or conformation, with or without attached fittings.
1. A method for integrity testing a collapsible, flexible bioprocessing container using a system, the method comprising:
a) providing a collapsible, flexible bioprocessing container, wherein the container comprises at least two opposing flexible walls, wherein the surface of the walls internal to the container comprise a plurality of channels on said walls;
b) evacuating air from the container and a reference tank connected to the container to a negative atmospheric pressure;
sealing the system, the system comprising the container, the tank, and a tester between the container and the tank; and
c) monitoring mass flow of air entering the system using the tester, so as to determine the integrity of the container.
2. The method of claim 1 , wherein the plurality of channels are embossed on said walls.
3. The method of claim 1 , wherein the surface of the walls are matte surfaces.
4. The method of claim 1 , wherein the collapsible, flexible bioprocessing container is pre-folded.
5. The method of claim 1 , wherein the collapsible, flexible bioprocessing container further comprises fittings, tubing, connectors, and a combination thereof.
6. The method of claim 1 , wherein the negative atmospheric pressure is between −1 psi to −14 psi.
7. A method of detecting a 2 micron or larger defect in a collapsible, flexible bioprocessing container, the method comprising:
a) providing a collapsible, flexible bioprocessing container, the container comprising at least two opposing flexible walls, wherein the surface of the walls internal to the container comprise a plurality of channels on said walls;
b) evacuating air from the container and a reference tank connected to the container to a negative atmospheric pressure;
c) sealing the system, the system comprising the container, the tank, and a tester between the container and the tank; and
d) monitoring mass flow of air entering the system using the tester, wherein an increase in mass flow indicates the presence of a defect.
8. The method of claim 7 , wherein the plurality of channels are embossed on said walls.
9. The method of claim 7 , wherein the surface of the walls are matte surfaces.
10. The method of claim 7 , wherein the collapsible, flexible bioprocessing container is pre-folded.
11. The method of claim 7 , wherein the container further comprises fittings, tubing, connectors, and a combination thereof.
12. The method of claim 7 , wherein the negative atmospheric pressure is between −1 psi to −14 psi.
13. The method of claim 8 , wherein the surface of the walls are matte surfaces.