The particle size of this product is not determined. However, silicon-based antifoam formulations have a general particle size range of 10um - 40um.
A8011
Antifoam C Emulsion
aqueous-silicone emulsion
Sinônimo(s):
Antifoaming Agent Emulsion
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About This Item
Código UNSPSC:
12161900
NACRES:
NA.25
Preço e disponibilidade não estão disponíveis no momento.
Produtos recomendados
fonte biológica
synthetic
Formulário
emulsion
contém
emulsifier
técnica(s)
cell culture | hybridoma: suitable
microbiological culture: suitable
pf
0 °C (32 °F)
Categorias relacionadas
Descrição geral
Antifoam C emulsion is an aqueous emulsion containing 30% active silicone. This silicone-based antifoam emulsion[1] consists of non-ionic emulsifiers different from those in antifoam emulsions B and Y-30. Antifoam C emulsion can be prediluted with 3-10 parts of cool water to aid in dispersion. Prediluted suspensions should be used immediately. Antifoam C emulsion is typically effective at 1-10 ppm. The flow properties of antifoam C emulsion are such that it can be pumped on an as-needed basis to a fermenter system with sufficient agitation to disperse the antifoam. Antifoam C emulsion can be used to regulate headspace foaming in mammalian cell culture bioreactors up to 30 ppm concentration.[1]
Aplicação
Antifoam C emulsion has been used:
- as a supplement in RO-H2O and a chemically defined culture medium to determine volumetric mass transfer coefficient (kLa) of mammalian cell culture[2]
- as a component of feed medium[2],
- as a steam-sterilized antifoaming agent in a biocontroller for pH-stat fed-batch cultivations[3]
- as a supplement in fed batch medium to mimic the typical large-scale cultivation conditions[4]
Características e benefícios
- Minimizes compatibility issues with biological systems
- Highly effective defoamer at low concentrations
- Highly effective and versatile silicone defoamer
Outras notas
A 30% aqueous emulsion of polydimethylsiloxane concentrate.
For additional information on our range of Biochemicals, please complete this form.
Palavra indicadora
Warning
Frases de perigo
Declarações de precaução
Classificações de perigo
Eye Irrit. 2 - STOT SE 3
Órgãos-alvo
Respiratory system
Código de classe de armazenamento
10 - Combustible liquids
Classe de risco de água (WGK)
WGK 3
Ponto de fulgor (°F)
Not applicable
Ponto de fulgor (°C)
Not applicable
Equipamento de proteção individual
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
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Magdalena Pappenreiter et al.
Frontiers in bioengineering and biotechnology, 7, 195-195 (2019-09-10)
In aerobic cell cultivation processes, dissolved oxygen is a key process parameter, and an optimal oxygen supply has to be ensured for proper process performance. To achieve optimal growth and/or product formation, the rate of oxygen transfer has to be
Characterizing the Effects of Antifoam C Emulsion on Oxygen Mass Transfer within the BIOne Drilled-Hole Sparger and Microsparger Single-Use Bioreactor Systems
McAndrew J and Kauffman G
American Pharmacy null
Mervyn W O Liew et al.
Journal of biotechnology, 150(2), 224-231 (2010-08-28)
This study demonstrates the feasibility of large-scale production of murine polyomavirus VP1 protein in recombinant Escherichia coli as pentamers which are able to subsequently self-assemble in vitro into virus-like particles (VLPs). High-cell-density pH-stat fed-batch cultivation was employed to produce glutathione-S-transferase
Bernhard Sissolak et al.
Biotechnology journal, 14(7), e1800714-e1800714 (2019-04-16)
Frequently measured mammalian cell culture process indicators include viability and total cell concentration (TCC). Cell lysis, an additional important process characteristic that substantially contributes to the overall product purity profiles, is often not addressed in detail. In the present study
Gang Fu et al.
Biotechnology and applied biochemistry, 67(5), 812-818 (2019-10-08)
d-Psicose 3-epimerase is an enzyme that catalyzes the synthesis of d-psicose from d-fructose. We cloned the d-psicose 3-epimerase from Ruminococcus sp. (RDPE) and expressed it in Bacillus subtilis A311. By a two-step pH regulation of segmented fermentation, we significantly improved
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What is the particle size range of the silicone emulsion particles in this anti-foam. Thank you!
1 answer-
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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Will there be a problem if I add 100ppm of antifoam when cultivating bacteria?
1 answer-
This product is typically effective at 1-10 ppm. Therefore, there is no guarantee how 100 ppm will perform for bacteria cultivation.
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Can the antifoam be autoclaved pure? When diluted (e.g. to 0.5% or 0.1%)?
1 answer-
Yes, this product may be autoclaved. Autoclaving the pure product may result in phase separation and might require remixing the emulsion.
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