Designed for storing biological fluids and pathology specimens, these containers are also useful for almost any Miscellaneous storage needs, such as at laboratory or nursing stations. All containers are precision-molded from polypropylene with clear, molded-in graduations. They are highly resistant to most chemicals, including formaldehyde, most bases, and weak acids. They can also withstand boiling and freezing. Polyethylene (PE) closure only recommended to 80 C.