Erlenmeyer flasks are designed for a variety of laboratory liquid handling applications, including pouring, mixing, storage, and suspension cell culture. Available in a broad range of sizes, these conical flasks have wide, flat bottoms, tapered necks, and either wide or narrow mouths. The open tops can accommodate a variety of closures including screw caps and stoppers. Choose from glass or plastic, sterile or non-sterile, and unmarked or graduated. Be advised that volume indicators on graduated Erlenmeyer flasks are approximations and should not be used for accurate measurements. Thermo Scientific™ Nalgene™ Erlenmeyer Flasks made with Teflon™ FEP with ETFE Closure and Thermo Scientific™ Nalgene™ PMP Erlenmeyer Flasks with Closure both provide an excellent combination of chemical resistance, strength, and transparency.