Baffled Flask
Baffled Flask - Related Videos
08:39
Scale-Up of Mammalian Cell Culture using a New Multilayered Flask
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Cited by 4 •
2011
Cells play an instrumental and increasing role in research, and the discovery and development of new therapeutics. With this increasing need for greater number of cells we need more efficient and effective ways for growing and harvesting attachment dependent cells. A Multilayered flask with the right features can serve this purpose.
02:18
Preparing a Soil Bacterial Culture for Bacteriophage Infection
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2026
Source: Cross, T., et al., An Optimized Enrichment Technique for the Isolation of Arthrobacter Bacteriophage Species from Soil Sample Isolates. J. Vis. Exp.(2015)This video demonstrates the preparation of a bacterial culture for bacteriophage production. It covers the steps of inoculating a soil bacterium into a baffled flask, promoting uniform growth through aeration and shaking, and monitoring cell density using optical density measurements. Once the culture reaches the optimal growth phase,...
02:45
Culturing Neisseria gonorrhoeae in Metal-Depleted Conditions
0 Views •
2025
Source: Maurakis, S., and Cornelissen, C. N. Metal-Limited Growth of Neisseria gonorrhoeae for Characterization of Metal-Responsive Genes and Metal Acquisition from Host Ligands. J. Vis. Exp. (2020)This video demonstrates the procedure for growing Neisseria gonorrhoeae under metal-limited conditions using a defined, metal-depleted medium.
07:33
In vivo Dual Substrate Bioluminescent Imaging
0 Views •
Cited by 20 •
2011
Herein we describe the methods to construct, visualize, and quantify the bioluminescent reactions of both firefly and renilla luciferase enzymes expressed in metastatic breast cancer cells during their growth and metastasis in vivo.
02:36
Preparation and Isolation of Streptomyces venezuelae Spores from a Liquid Culture
0 Views •
2025
Source: Schlimpert, S., et al. Fluorescence Time-lapse Imaging of the Complete S. venezuelae Life Cycle Using a Microfluidic Device. J. Vis. Exp. (2016)This video demonstrates the cultivation and isolation of spores from Streptomyces venezuelae. Spores, dormant cells that help bacteria survive stress, are produced during nutrient limitation and collected through centrifugation. The method ensures a pure, cold-stored spore suspension for downstream applications.
FAQs
When a Baffled Flask is agitated, its internal ridges interrupt the circular flow that normally develops in a smooth vessel. This disruption creates greater turbulence, which helps move oxygen from the headspace into the culture medium. The resulting circulation also supports more even exposure of cells or microorganisms to nutrients and dissolved gases during cultivation.
Agitation activates the flask’s mixing advantage by forcing the liquid against its internal ridges. The baffles then disrupt circular movement and increase turbulence, helping transfer oxygen from the headspace into the medium. This process also distributes nutrients, cells, and dissolved gases more evenly, which supports a consistent cultivation environment.
Because the baffles alter fluid motion rather than allowing the liquid to rotate as one relatively smooth mass. That changed hydrodynamic pattern can improve mixing and gas transfer, producing a more uniform culture environment. The comparison is useful when conventional flask cultures show uneven distribution of nutrients, cells, or dissolved gases.
At a broad level, biological cultivation starts with a culture and medium in the vessel, followed by agitation to generate the mixing and gas-transfer effects provided by the baffles. The culture can then be used for microbial growth, biomass or recombinant-product production, or optimization before bioreactor scale-up.
These vessels support microbial cultivation when the goal is to obtain biomass or a recombinant product. They can also help investigators optimize shaking-culture conditions before moving to a bioreactor. In that role, the flask is not only a growth container; it is a practical stage for evaluating culture behavior under improved mixing and gas exchange.
Shaking cultures in these vessels can serve as an optimization stage before scale-up to bioreactors. Researchers can use them to examine cultivation conditions in a format that promotes mixing and gas exchange, then carry the selected shaking-culture approach into larger-scale planning. This connects small-scale biological cultivation with subsequent process development.