PekyBio's single-use PETG Erlenmeyer Flasks with plain bottom, ideal for suspension of cell culture, media preparation, mixing and storage. PETG is robust and break resistant, increasing personal safety. All sizes are available vented or non-vented. They are non-toxic and environmentally friendly. They are packaged individually in a sterile zip sealable bag. Our vented cap erlenmeyer flasks come with 0.22µm hydrophobic membrane for continuous gas exchange without contamination.