7239-30 Powder Dispensing Funnel - 100mL Capacity with 1mL Graduations - Precise Powder Measuring Tool for Baking, Chemistry & Lab Use

Side operated screw feed instrument for 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 ptfe-ceramic shaft and contained within a precision bore housing. Completely inert materials allow flushing with solvents without fear of contamination. #15 can accommodate-thred offers easy disassembly for cleaning. Large 11/4 inch knob makes turning smooth and easy. Top female & bottom male joints are 24/40.