This 250ml (8 ounce) straight-sided jar is constructed of transparent polycarbonate with a white polypropylene (PP) closure. Window-clear transparency with high impact resistance. Nontoxic. Excellent for cold room and refrigerated use. NOTE: Before autoclaving completely remove cap or closure and set on top of the container at an angle without engaging the threads. Repeated autoclaving will shorten jar life. Polycarbonate with a white polypropylene (PP) closure. Closure size: 70mm. Capacity: 250ml (8 ounce). 4/Pack; 6 Packs/Case. Nalgene® #: 2116-0250.