This borosilicate glass bottle with 20000ml capacity is designed for filtration processes. Features printed graduations from 4000-16000ml at 2000ml intervals. Compatible with size 13.5 stoppers and 1/2" tubing. Bottle measures 588mm tall with an outer diameter of 290mm. A vacuum can be applied in 5-minute intervals. When restarting the vacuum, make sure to release the current vacuum to ensure proper pressure management. The pressure of the air that is removed should never exceed 600 mm Hg at any point in time.