This 1000mL (32 ounce) polycarbonate square bottle offers excellent clarity and durability. Ideal for general purpose storage of aqueous solutions and short-term storage of media. It is also graduated for convenient volume measurement. Before autoclaving just set closure on top of the container without engaging the threads. Autoclave empty only. Repeated autoclaving will shorten the life of the bottle. Good for freezer use to -135°C. Polycarbonate. Square. Graduated. Capacity: 1000mL (32 ounce). 4/Pack; 6 Packs/Case. Nalgene® #: 2015-1000.