PekyBio's Square PET Media Bottles are manufactured in a class 100,000 cleanroom environment. Polyethylene terephthalate (PET) bottles are ideal for storage and sampling of media, biologicals, and other aqueous solutions. These light-weight bottles are shatter-resistant, sterile and come in a space-saving square design. Can't autoclave. It can be used to storage reagents but cannot be used as heating vessels. Bottle and cap are normally pre-assembled together. Sterilized by gamma radiation, SAL=10-6, DNase/RNase/Pyrogen free.