These PyrexPlus® solution bottles feature a protective PVC coating for longer product life and safety. Protective coating helps prevent glass from shattering and reduces spills. Autoclavable at 121°C and resistant to thermal shock. Designed for storage of solutions and ideal for media preparation. The 9L and 13L sizes are in conventional bottle shape and the 19L size is similar in design to a carboy. Necks are tooled to increase mechanical strength and for uniform stopper fit. Takes a No. 12 rubber stopper. Graduated in 500mL increments with black enamel.