WHEATON® offers both flat bottom and baffled Erlenmeyer flasks.

• Ideal replacement for glass and other Erlenmeyer/shaker flasks
• Patented DuoCap® allows sterile air exchange or a leak-resistant seal
• Minimize oxidation or pH shifts
• Perform aerobic/anaerobic culture
• Available with septum cap for pathogen containment
• Re-autoclavable, reusable
• Individually packed in easy tear bags

These Erlenmeyer flasks are made of Lexan polycarbonate resin, which offers outstanding mechanical, optical, electrical, and thermal properties. This resin conforms to flame retardant standards and is scratch-resistant. It also meets the requirements of United States Pharmacopeia (USP) XXII Class VI. The flasks are manufactured in a class 10K clean room, and are certified pyrogen-, DNase- and RNase-free. They are packaged particulate-free and wrapped in an easy tear, sterile bag.

Both Erlenmeyer and shake flasks are supplied standard with a patented vented DuoCap®. The DuoCap®, made of medical grade polypropylene, has a 0.22 µm membrane that allows sterile gas exchange when the cap is open. When the cap is closed, the flask becomes leak-resistant. Baffled flasks are ideal for applications that require increased levels of oxygenation and mixing. The flask and DuoCap® can be autoclaved (less than or equal to 10 cycles) and can withstand temperatures up to 130 °C. Each Flask is gamma irradiated to sterility assurance level (SAL) of 10⁻⁶. The flasks are transparent and feature molded graduation markings.