"STEM kits"

Our high-quality funnels meet ASTM standards.

Quality, heavy-walled borosilicate funnels with reinforced edge.

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.

PYREX®, borosilicate glass.

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.

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.

Useful for adding powder chemical to reaction vessels.

Standard for any laboratory.

These funnels are made from borosilicate glass and have a short stem.

This unbreakable plastic thistle tube is ideal for the high school laboratory. It has a two piece construction with the stem tightly fitting into the funnel. Stem O.D.: 6mm. Length: 290mm. Package of 12.

A rugged borosilicate funnel with stem length approximately equal to funnel diameter. These funnels have a 58° angle. Top dia.: 65mm. Filter size: 11cm. Package of 12.

Quality, heavy walled borosilicate funnels with reinforced edge. The inside angle is approximately 60° and the stem length is 150 mm.