Made of light, crystal clear PETG, PEHD 0.2 µm closure. Sterile disposable flasks reduce the chance for cross contamination. Ideal for shaker and suspension cell culture, media preparation or storage. Molded-in graduations. The PEHD closure has a hydrophobic 0.2 µm PTFE membrane that allows sterile air exchange. Individually packaged for easy storage and handling. Made of light, crystal clear PETG, PEHD 0.2 µm closure. Sterile disposable flasks reduce the chance for cross contamination. Ideal for shaker and suspension cell culture, media preparation or storage. Molded-in graduations. The PEHD closure has a hydrophobic 0.2 µm PTFE membrane that allows sterile air exchange. Individually packaged for easy storage and handling.