Baffled Erlenmeyer flask 500 ml DURAN membrane closure pouring ring GL45 pack of 4

DURAN® baffled flask, GL 45, with membrane closure and pouring ring, 500 ml When culturing microorganisms in Erlenmeyer flasks on a shaker tray, oxygen transfer is often the limiting factor for cell growth. When using DURAN® Erlenmeyer flasks on a shaker, the movement creates a liquid crescent. The size of the crescent depends on the speed of the tray and the shaking diameter. The larger the surface area of the contents, the larger the gas exchange area and therefore the possible oxygen transfer. However, the speed and the associated oxygen transfer can only be increased to a limited extent. The new DURAN® baffled flask with four baffles at the bottom interrupts laminar flow and generates turbulent flow. The surface of the liquid and the gas exchange area are increased, which increases oxygen transfer. Laboratory tests demonstrated that the baffles doubled oxygen transfer compared with a standard DURAN® Erlenmeyer flask. Due to fully automated and machine-based production, the DWK Life Sciences Erlenmeyer flasks with baffles are geometrically reproducible. The wall thickness of the flasks was increased to achieve excellent mechanical stability and ensure a long service life of the products. The special manufacturing process makes it possible to produce the product completely with a thread in a two-stage process. The flasks can therefore be closed with the proven membrane closure from DWK Life Sciences. This enables more reproducible gas exchange compared with other closure options, such as closing with cotton wool. Special features and advantages: The four baffles at the bottom cause turbulent flow, enlarge the gas exchange area and thus increase oxygen transfer At higher shaking speeds, the baffles provide stronger aeration for more growth, especially of bacteria At low shaking speeds, the baffles provide more movement and gentle aeration for sensitive cell cultures Closing with the proven membrane closure from DWK Life Sciences enables more reproducible gas exchange compared with other closure options, such as closing with cotton wool The consistently automated production makes the shaping highly reproducible, resulting in consistent experimental conditions The special manufacturing process makes it possible to produce the product completely with a thread in a two-stage process Available in three sizes for straightforward process scale-up The increased wall thickness of the flasks provides excellent mechanical stability and ensures a long service life Clearly readable scale with graduation marks for measuring the contents Permanently durable white printed image, fired in and therefore permanently stable Application: Cultivation and propagation of microorganisms, preparation and cultivation of nutrient media, cultivation, storage and transport of bacteria, yeasts, plant and animal cells , Suitable for liquid cultures (e.g. pure cultures, enrichment cultures), use on/in shakers, The GL 45 thread enables the use of the following closures: GL 45 membrane closure for autoclaving processes, 30 mm culture plugs made of e.g. cell wool, silicone sponge or cellulose for cultivation, as well as GL 45 screw closures for storing media or reagents. The product can be supplied with or without membrane closure and pouring ring.