"STEM kits"

Standard for any laboratory.

Heavy glass with raised ribs inside.

Useful for adding powder chemical to reaction vessels.

Add liquids safely to flask setups while keeping apparatus assembled.

Büchner funnels with straight sides and fixed perforated plates made of glazed porcelain.

Stout-walled Thistle Tube Funnels for the delivery of liquid to an existing system or apparatus.