Product details:
Ace Glass, 7320-08, Funnel, Pressure Equalizing, Graduated with PTFE Metering Valve, 125 ml Cylindrical with standard taper joint top and bottom, drip stem, pressure equalizing arm and double scale graduations, calibrated from stopcock. Drip stem does not extend beyond joint, thereby eliminating possible source of breakage. Fabricated from borosilicate glass.