Laboratory funnels

November 1, 2021

Laboratory funnels are necessary instruments for various activities. They are conical pieces that not only allow the transfer of liquids or chemical products, but also have other functions such as the filtration of mixtures.

What is it?

It is a conical piece of glass or plastic that is used for transferring chemical products. Some types of funnels are also used for filtration by using a filter paper inside the funnel.

What is it for?

The use that a funnel can have in a laboratory will depend on the type of funnel we have:

Flat funnels

They are considered of normal design and are intended for basic operations. They come in various sizes, some with long necks and others short.

Embudo Büchner

It is one that is made of porcelain and has a sintered glass plate or a porcelain base. They are used for low pressure filtration with a Büchner flask or kitasato, connected to a vacuum pump.

Filtration funnel

It is conical in shape and is usually made of glass. The models for cold filtration have only one outlet tube, but the models for hot filtration are made of pyrex glass and do not have an outlet tube.

Safety tube

It is shaped like a thistle flower and is used to add liquids to laboratory equipment or setup.

Powder funnel

It has a wide and short neck. It is ideal for solid materials because it does not clog easily.

Adding or dripping funnel

It has a key that allows you to control the speed with which a liquid is added to a container . They are cylindrical and are often frosted.

Separating funnel

It is pear-shaped, has a cap in the upper mouth and a short neck, with a stopcock to pour the liquid in a controlled manner. It is used for the separation of liquid-liquid mixtures when these are immiscible.

Hot filtration funnel

It is a funnel that has an outer jacket and is surrounded by a hot fluid. It is used to maintain the temperature of hot fluids or to slightly heat a substance while it is being transferred.

Embudo Hirsch

Its shape is similar to that of a normal funnel, but has holes in its base for quick filtration.

Dr. Loony Davis5
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Born and raised in Brussels in an English family, I have always lived in a multicultural environment. After several work experiences in marketing and communication, I came to Smart Water Magazine, which I describe as the most exciting challenge of my career.
I am a person with great restlessness and curiosity to learn, discover what I do not know, as well as reinvent myself daily, someone who is curious about life and wants to know. I enjoy sharing knowledge.
This is my personal project but I also collaborate in other blogs, it is the case, the most important web on water currently exists in the US, if you are interested you can read my articles here.

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