KIMAX funnel is supplied with a closed-bottom linear, high-density polyethylene stopper to fit in the ground neck, and polytetrafluoroethylene stopcock. Lower stems have an I.D. large enough that a column of liquid will "break" with the stopcock closed, thereby giving a more complete separation and eliminating the necessity of emptying the funnel. Designed from ASTM Specification E1096, type 4 requirements. Replacement stopcock plug is a 41500F. Replacement stopper is 28160R.