网页Corning. PYREX® borosilicate glass Useful as a delivery/storage container for solutions Autoclavable Features a tubular sidearm outlet to facilitate attachment of flexible tubing. 250 mL bottles take size 2 rubber stoppers; 500 mL bottles take size 4; 1,000 mL and 2,000 mL bottles take size 6;. Related Products: 500 Ml Glass Bottles.