Clarified polypropylene, wide-mouth containers are flexible, crack-resistant, and autoclavable, and allow visualization of specimens. Select sizes are available with a pressure-sensitive inner seal that protects against leakage and reduces exposure to formalin vapors. Lid is ribbed for easy handling and the clear label allows viewing of the specimen. Containers are filled with 10% buffered formalin. Product is labeled “Biohazard.”