Filter Funnel, Cylindrical, Valve/Stopcock, Synthware, Capacity: 60 or 200mL available, Joints: 14/20 or 24/40 available, Frit OD: 30 or 40mm available, Frit Porosity: Medium or coarse, with a 0-4mm high vacuum valve and a 2mm glass stopcock/having a constant pressure retention device.