"STEM kits"

These funnels have large diameter stems for fast powder transfer.

These unbreakable polypropylene powder funnels are ideal for student use. External ribs prevent air lock. Can be autoclaved. Stem length is 35 mm.

Large Opening Funnel.

These funnels are available in a variety of different diameter openings.

Industrial quality powder funnels made of heat tolerant and chemically-resistant polypropylene, with parallel stems.

Borosilicate glass powder funnel with an 85 mm diameter and a 60° angle, featuring a plain stem of 24 mm, facilitating smooth and accurate powder transfer in laboratory settings.