This polypropylene jar improves on the classic tapered square design with a larger opening for easier placement and removal of slides. The polypropylene screw cap is 53mm in diameter, has a flat top, easy grip larger knurled edge, deep thread and a seal ring to prevent leaks. Five internal slots hold up to 10 standard 1 x 3” or 25 x 75 mm slides back to back. The base diameter is 59.7 mm (2 3/8”), height is 114 mm (4 1/2”). Steam autoclavable at 121°C (250°F), remove cap when autoclaving.