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A5757

Sigma-Aldrich

Antifoam B Emulsion

aqueous-silicone emulsion

Sinónimos:

Antifoaming agent B

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About This Item

UNSPSC Code:
12161900
NACRES:
NA.25
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Quality Level

200

form

emulsion

contains

emulsifier (different from those present in Antifoam A emulsion)

technique(s)

cell culture | hybridoma: suitable
microbiological culture: suitable

General description

Antifoam eliminates excessive foaming formed during impingement, due to proteins and/or carbohydrates in the collection medium. Antifoam B emulsion is a silicone based antifoam.[1] Antifoam B emulsion does not affect the growth of bacteria.[2] Antifoam B emulsion functions as an antifoaming agent in shake flask culture of bacteria.[3]

Application

Antifoam B emulsion has been used:
  • to enhance collection efficiency in collection media[1]
  • as a component in stress granule lysis buffer to reduce foaming[4], in host cell lysis buffer to reduce foaming caused by detergents[2]
  • to improve solubility of antibiotics[5]
  • as a foaming controls in bacterial growth media[3]

Other Notes

A 10% aqueous emulsion of polydimethylsiloxane

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

>214.0 °F - closed cup

flash_point_c

> 101.1 °C - closed cup

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Certificados de análisis (COA)

Lot/Batch Number
MKCX2792
MKCV6047
MKCW7753
MKCW3582
MKCV1361

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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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.pdf

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