A flexible bioprocess bag comprising a number of flexible panels which are sealed to each other such that when the bag is filled they form at least a bottom of the bag and a side surface of the bag, wherein one of the flexible panels is called a bottom panel and when the bag is filled said bottom panel will constitute the bottom of the bag and parts of the side surface of the bag, said parts of the side surface being bent side parts of the bottom panel.

A cell culturing method and device that uses a cell culture bag (1) that includes a bag body (2) configured from an upper surface film (21) and a lower surface film (22) having a sealed periphery, and a port (3) attached to the bag body (2), and a plurality of recesses (4) being formed in the lower surface film (22). The method including: a closing-off step for closing off the plurality of recesses (4) using the upper surface film (21) by discharging a culture medium (S) contained in the bag body (2) through the port (3); and a releasing step for releasing, in some or all of the plurality of closed-off recesses (4), cells or cell aggregates adhering to the inner surfaces of the recesses (4).

The culture medium processing system includes a controller (100) configured to control operation of a sample dispensing part (20), a reagent dispensing part (26) and a transport arm (24) to deproteinize a sample, wherein the controller (100) is configured to dispense a methanol solution into an empty filtration container (50) to perform a conditioning of a filtration filter (52) disposed in the filtration container (50), then dispense a sample into the filtration container (50), add an acetonitrile solution as a deproteinization agent to the sample in the filtration container (50), and then perform a filtration process in the filtration part (30).

A photobioreactor system and a process for its use is illustrated, whereby water and nutrients from multiple sources are balanced (mixed using aeration) to the specific requirements of the particular photosynthetic organism strain used, sterilized, further mixed to balance the system and seeded with the photosynthetic microorganism, e.g. microalgae (dilution of a concentrated stock or added to an existing algal biomass). In accordance with such an embodiment, the algal biomass is then grown for a most efficient number of hours in a totally controlled environment where temperature (using aeration, an internal coil cooling system, or a combination thereof), pH (via CO.sub.2 delivery) and light delivery (using internal lighting directly inside the algal biomass) are optimized to the algal strain grown.

An air-stirred tank reactor (ASTR) and methods of use thereof are described herein. The ASTR is equipped with an impeller or set of impellers that mechanically mixes a liquid culture, as well as sparges gas into the liquid medium. The impeller can further have lighting sources that can illuminate the liquid culture. Unlike conventional bioreactors, the ASTR provides superior liquid mixing, efficient gas mass transfer, and a low-shear culture environment through appropriate impeller rotational speed and sparging rate.

A liquid injection method for injecting a liquid into a culture vessel includes tilting the culture vessel around a horizontal axis at a tilt angle (X) of greater than 0 and 50 or less, wherein adherent cells are adhered to the culture vessel; and injecting the liquid into the culture vessel at a predetermined linear velocity (Y mm/s) via a wall surface of the culture vessel tilted at the tilt angle (X), wherein the tilt angle (X) and the linear velocity (Y) satisfy the following (formula 1): Y5.075X+123 (formula 1).

A method displacing a fluid and simultaneously gas enriching a liquid cell culture medium with a gas. The method includes injecting a controlled volume of a gas or gas mixture into a one chamber by using a gas flow controller, the injection taking place through a gas inlet into a volume of liquid. This injection produces bubbling and agitation of the volume of liquid; a build-up of gas or gas mixture due to buoyancy in a hermetic space formed by the volume of liquid and the chamber, and a pressure increase in the chamber until a sufficient controlled pressure is reached of less than or equal to 10 bar. This increase displaces the volume of liquid by a fluid outlet connecting the volume of liquid to the exterior of the chamber. Also provided are a device implementing the method and a cell culture system in a multi-well culture plate.

The invention relates to a method for removing a viral contaminant from a preparation, being a cell culture medium or at least a component of a cell culture medium. The method comprises subjecting said preparation to filtration for at least about 24 hours through a virus filter having an effective pore size of maximum about 75 nm. Further, the invention relates to the use of a virus filter in filtration of at least about 24 hours, wherein the virus filter has an effective pore size of maximum about 75 nm for the removal of viral contaminant from a preparation, being a cell culture medium or at least a component of a cell culture medium. In some embodiments the filtration according to the invention operates at a volumetric capacity of at least about 2000 L/m.sup.2. Further, the invention relates to the use of a preparation, being a cell culture medium or at least a component of a cell culture medium obtainable according to method of the invention for cell culture; pharmaceutical, diagnostic and/or cosmetic preparations as well as in food preparations.

The monitoring and control of bioprocesses is provided. More particularly, the present disclosure is directed to formulating buffer products from multiple buffer solutions for feeding the different operations occurring within a bioprocess line. As the buffer product is being formulated, the buffer product is tested for conductivity, refractive index, and optionally pH. The conductivity measurements are used in conjunction with refractive index measurements to ensure that the buffer product not only has the correct concentration of ions but also has the correct concentration of components. A controller can be used to make automatic adjustments to the buffer product should any of the measured parameters fall outside a preset range.

A cell culture matrix is provided that has a substrate with a first side, a second side opposite the first side, a thickness separating the first side and the second side, and a plurality of openings formed in the substrate and passing through the thickness of the substrate. The plurality of openings allow flow of at least one of cell culture media, cells, or cell products through the thickness of the substrate, and provides a uniform, efficient, and scalable matrix for cell seeding, proliferation, and culturing. The substrate can be formed from a woven polymer mesh material that provides a high surface area to volume ratio for cells and good fluid flow through the matrix. Bioreactor systems incorporating the cell culture matrix and related methods are also provided.