A vertical, compact, screw feed funnel for the addition of powders and solids (up to 25 mesh) into reactions without seizing or binding

Features a flexible PTFE screw thread wrapped on a precision PTFE-ceramic 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. #7 Ace-Thred offers easy disassembly for cleaning. Top outer and bottom inner joints are a standard taper 14/20. Approximate capacity, 15 mL. Fabricated from borosilicate glass.