NALGENE sterile disposable bottles are ideal for shakers and suspension cultures, media production or storage. They are made of lightweight, crystal clear PETG with an easy-to-open polyethylene screw cap. All sizes are available with a flat bottom or with chicanes for use on the bench or on the shaker table. These disposable bottles are inexpensive and offer the high level of quality that the customer can expect from NALGENE products. The disposable Erlenmeyer bottles are individually packed and gamma-sterilized.