"STEM kits"

Our high-quality funnels meet ASTM standards.

These funnels have large diameter stems for fast powder transfer.

Quality, heavy-walled borosilicate funnels with reinforced edge.

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

Resists Virtually All Chemicals

Each set includes three funnels of different sizes. Small funnels are made of polypropylene; large funnels are made of polyethylene. Sizes in small funnel set: 60 mm top dia. x 20 mm stem, 80 mm top dia. x 22 mm stem, 110 mm top dia. x 36 mm stem. Sizes in large set: 127 mm top dia. x 45 mm stem, 160 mm top dia. x 50 mm stem, 200 mm top dia. x 60 mm stem.

Heavy glass with raised ribs inside.

The external ribbing on this funnel prevents air lock.

Funnels are made of durable plastic. Funnels of top inner diameter 70-108 are polypropylene and autoclavable. Funnels with top inner diameter of 127 and 165 are polyethylene and not autoclavable.

The 165 mm size has a wide stem for quick transfers.

Large Opening Funnel.

PYREX®, borosilicate glass.

These clear funnels have long stems, smooth walls, and external ribs to prevent air lock.

For filling burets. Diameter: 35 mm; total length: 60 mm; outside diameter of stem: 6 mm.

Ideal for filling burets and other narrow laboratory apparatus. The top diameter (ID) is 35 mm and stem diameter is 8 mm. Package of 12.

Useful for adding powder chemical to reaction vessels.

Standard for any laboratory.