Our filtering flasks are constructed of heavy wall borosilicate glass in order to withstand high vacuum. Used in conjunction with vacuum filter systems, these filtering flasks feature heavy-duty rims to reduce chipping. Our filtering flasks also feature permanent white graduations and a large marking square for labeling. All flasks are sold individually * Made of premium borosilicate glass to withstand high vacuum * Heavy-duty rims to reduce chipping * Permanent white graduations * Large marking square for labeling * Port for tubulation has an outside diameter of 10 mm * Accepts a No. 8 rubber stopper (not included) SPECIFICATIONS: * Autoclavable: True * Capacity: 500 mL * Color: Clear * Dimensions (L x W): 105 x 170 mm * Material: Borosilicate Glass * Quantity: 1 Each * Stopper No.: 8 * Volume: 500 mL * Warranty: 1 Year