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A6582

Sigma-Aldrich

Antifoam A concentrate

active silicone polymer 100%

Synonyme(s) :

Antifoam agent, Antifoam solution, Foam control agent

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About This Item

Code UNSPSC :
12161901
Nomenclature NACRES :
NA.85

Niveau de qualité

200

Forme

emulsion (aqueous)

Technique(s)

cell culture | hybridoma: suitable
microbiological culture: suitable

Densité

0.97 g/mL at 25 °C

Application(s)

microbiology

Température de stockage

room temp

Adéquation

(Mammalian (suspension))
bacteria (fermentation)

Catégories apparentées

Description générale

Antifoam A is a silicone-based product used to prevent or minimize foaming in both microbial fermentation systems and mammalian suspension cultures. Control of foaming minimizes damage to the cells, resulting in increased protein/antibody production. Extremely effective for aqueous and non-aqueous systems. Effective at concentrations in the 1-50ppm range.

Application

Antifoam A concentrate has been used:
  • in bioreactor culture for Staphylococcal enterotoxin C (SEC) production.
  • to prevent foam formation during the aerobic treatment of sludge.
  • to study the impact of surface tension on bioaerosol generation during bubbling.

Caractéristiques et avantages

  • Molecular biology grade and tested for use in bacterial fermentation.
  • Extremely effective foam suppressor for aqueous and non-aqueous systems.
  • Made of 100% active silicone polymer, free of emulsifiers.
  • Typically, effective at 1-100 ppm.
  • Product will be stable in the pH range of 5 to 9.
  • Can be directly added to a fermentation medium but it is not recommended that it be pumped to a fermenter on an as-needed basis.

Composants

Antifoam A is a 100% active silicon polymer containing no non-ionic emulsifiers .

Notes préparatoires

Antifoam A can be pre-diluted with 3-10 parts of aqueous propylene glycol or non-aqueous vegetable oil with slow mixing.

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Pictogrammes

Environment
GHS09

Mention d'avertissement

Warning

Mentions de danger

H410

Conseils de prudence

P273 - P391 - P501

Classification des risques

Aquatic Acute 1 - Aquatic Chronic 1

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

>213.8 °F - closed cup

Point d'éclair (°C)

> 101 °C - closed cup

Équipement de protection individuelle

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Consulter la Bibliothèque de documents

The biodegradability of aquatic worm predated waste activated sludge: A sequential aerobic and anaerobic treatment approach
de Valk S, et al.
bioresource technology reports, 12.0, 100606-100606 (2020)
Bioaerosol Release from Concentrated Microbial Suspensions in Bubbling Processes
Kruglyakova E, et al.
Air quality, atmosphere, & health, 13.0, 2029-2029 (2022)
Experience with a perfo-suction system for the recovery of schistosomes from laboratory rodents
T. F. H. G. Jackson, C. D. Dettman, et al.
Laboratory Animal Science, 16, 65-67 (1982)
Factors affecting staphylococcal enterotoxin C bovine production in milk
Hunt K, et al.
International dairy journal, 39(1), 41-46 (2014)
M Schlömann et al.
Journal of bacteriology, 172(9), 5119-5129 (1990-09-01)
Enzymatic conversion of 4-fluorocatechol in the simultaneous presence of partially purified preparations of catechol 1,2-dioxygenase from Pseudomonas cepacia and muconate cycloisomerase from Alcaligenes eutrophus 335 yielded a product that was unambiguously identified as (+)-4-fluoromuconolactone [(+)-4-carboxymethyl-4-fluoro-but-2-en-4-olide]. This compound was shown to
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