Blue PEHD, PTFE membrane. Vented Closures provide sterile gas exchange for shaker and suspension cell culture. Hydrophobic 0.2 µm PTFE membrane allows sterile air exchange without unscrewing the closure and is heat welded into place for effective sealing. Made of blue HDPE for easy identification. Use with NALGENE Sterile Disposable flasks. Sterile.
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Vented Closures for Sterile Disposable Erlenmeyer Flasks Nalgene®