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About This Item
NACRES:
NA.25
UNSPSC Code:
12161900
description
100% active silicone polymer
Quality Level
form
suspension
does not contain
emulsifier
composition
active silicone polymer, 100%
technique(s)
cell culture | mammalian: suitable, microbiological culture: suitable
density
(0.97 g/mL at 25 °C (77 °F))
General description
Antifoam A Concentrate is an extremely effective foam suppressor for aqueous and non-aqueous systems. It is 100% active silicone polymer. No emulsifiers are present. Antifoam A Concentrate is typically effective at 1-100 ppm. Antifoam A Concentrate should be diluted with 3-10 parts of propylene glycol (aqueous) or vegetable oil (nonaqueous) with slow mixing. The product will be stable in the pH range of 5 to 9. Antifoam A Concentrate can be added directly to a fermentation medium, but it is not recommended that it be pumped to a fermenter on an as-needed basis.
Application
Antifoam A Concentrate has been used as a component of Luria Bertani culture medium for growth of BL21 (DE3) E. coli cells transformed with the plasmids. It has also been used as a constituent in the preparation of aerosol generation fluid.
An extremely effective foam suppresser for use in aqueous and non-aqueous systems.
Preparation Note
1-50 ppm is adequate for most applications.
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Storage Class
10 - Combustible liquids
flash_point_f
>213.8 °F - closed cup
flash_point_c
> 101 °C - closed cup
ppe
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
signalword
Danger
hcodes
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1 - PBT - vPvB
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