Porcelain crucible

November 1, 2021

A porcelain crucible is a laboratory item used to contain items that are to be heated to elevated temperatures.

What is it?

A porcelain crucible is a laboratory material used to heat, melt, burn, and calcine substances. Being made of porcelain, it can withstand high temperatures. Often used in gravimetric analysis.

Porcelain crucibles are used to carry out quantitative gravimetric determinations of various substances. Some crucibles have small holes in their lower part, these allow a filtration process to be carried out; which is very useful when making gravimetric measurements.

These instruments are highly resistant to temperature changes, can operate at a maximum temperature of 1100 ° C, are made of graphite and clay, their expansion is minimal and have high chemical resistance.

What is it for?

Crucibles are used in quantitative gravimetric determinations, that is, an analysis measuring the mass of the substance to be analyzed. In common crucibles, a residue or precipitate resulting from an analysis method is collected or filtered into an ash-free solution or element. The crucible and the element to be analyzed are pre-pressed with high precision and then incinerated in the furnace. The filter paper will burn without a trace.

The sample and the crucible are allowed to cool in a desiccator and the ashes will be subjected to gravimetric analysis.

How is it used?

To melt or heat with the porcelain crucible it is necessary to use flames or tongs to remove it from the flame. Before using it, it is necessary to preheat it to eliminate any trace of humidity that could alter the analyzes to be carried out.

If the crucible contains a substance, which is heating up, you should never point it at your face, body, or lab partner.

The crucible should be allowed to cool in a desiccator. Once the crucible is cool, the dead can be subjected to a new gravimetric analysis.

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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