Rubber adapter cone For Büchner Flasks

Rubber adapter cone For Büchner Flasks

A rubber adapter cone for Büchner flasks is a laboratory accessory designed to create an airtight seal between a Büchner funnel and a filter flask (also called a Büchner flask or vacuum flask). It plays a crucial role in vacuum filtration setups.

 Description:

• Material: Made of flexible, chemical-resistant rubber ensuring a snug fit and good chemical compatibility.

• Shape: Shaped like a conical ring or tapering sleeve, hence the name "cone."

• Function: Sits inside the neck of the flask, and the Büchner funnel is inserted into the cone. This forms a tight vacuum seal, which is necessary for efficient suction during filtration.

• Multiple Steps/Ridges: Many rubber adapter cones are stepped, with graduated ridges, so they can fit different diameters of funnels and flasks.

• Sizes: Come in various sizes, often labeled by numbers or inner/outer diameters, to fit various standard lab glassware.

Benefits:

• Ensures no air leaks during vacuum filtration.

• Reduces risk of glassware breakage by providing a cushioned interface.

• Versatile – fits multiple sizes of flasks and funnels.

• Easy to clean and reusable.

Common Use:

• In vacuum filtration, where a mixture is poured into a Büchner funnel lined with filter paper, and a vacuum pulls the liquid through the filter into the flask below.

• The rubber adapter cone ensures stability and vacuum integrity.