Ace Glass 7234-35 Powder Dispensing Funnel, 250 mL

Side operated screw feed funnel for the addition of powders and solids (up to 25 mesh) to reactions without problems of seizing or binding. Features a flexible PTFE screw thread wrapped on a precision Rulon shaft and contained within a precision bore housing. This offers a unique flexibility in that the thread can move aside temporarily; as one spacing increases, the adjacent spacing decreases, thereby maintaining an average feed rate. Completely inert materials allow flushing with solvents without fear of contamination. #15 Ace-Thred offers easy disassembly for cleaning. Large 1-1/4-inch knob makes turning smooth and easy. 14/20 outer joint atop inner joint is for easier flushing.