Z680974
Duran® baffled flask
borosilicate glass, working volume 500 mL, non-sterile
Synonym(s):
212834454
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About This Item
UNSPSC Code:
41122104
NACRES:
NB.43
material
borosilicate glass
screw top blue high-density polyethylene cap (filter cap)
screw top neck
straight neck
sterility
non-sterile
feature
vented
with cap
packaging
case of 4
manufacturer/tradename
DURAN® 212834454
working volume
500 mL
fitting
GL 45 cap
binding type
non-treated surface
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General description
Oxygen intake is often the limiting factor for cell growth in the cultivation of microorganisms in Erlenmeyer flasks on a vibrating board or orbital shaker. The movement causes a liquid sickle to form when using DURAN® Erlenmeyer flasks on a vibrator. The size of the sickle depends on the speed of the board and the vibration diameter. The greater the surface area of the contents, the greater the gas exchange area and therefore the potential oxygen intake. The speed and the associated oxygen intake can, however, only be increased to a limited extent. The new DURAN® baffled flask with four baffles on the bottom disrupts the laminar flow and produces a turbulent flow. The surface area of the liquid and the gas exchange area are increased, thereby increasing the oxygen intake. Laboratory trials have demonstrated that the oxygen intake is doubled by the baffles compared to a standard DURAN® Erlenmeyer flask. The Erlenmeyer flasks with baffles from the DWK Life Sciences can be geometrically reproduced due to completely automated and mechanical production. The wall thickness of the flasks was increased to achieve an excellent mechanical stability and to guarantee a long service life of the products. The special production process enables the manufacture of the product complete with thread in a two-stage process. The flasks can therefore be sealed with the tried-and-tested membrane screw cap from the DWK Life Sciences. This enables a reproducible gas exchange compared to other sealing mechanisms e.g. sealing with cotton wool.
Legal Information
DURAN is a registered trademark of DWK Life Sciences
Certificates of Analysis (COA)
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