How to choose crucibles 

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The alumina crucible (ceramic crucible) is the most commonly used crucible in TGA experiments. It is relatively stable for most samples and does not react with samples. In the range from room temperature to 1650°C, the aluminum crucible shows no thermal reaction.

The melting point of alumina crucible exceeds 1700℃, which can be used repeatedly.

The crucible must be open during the TGA test. But before the actual test, it is also very important to close the crucible, because it can prevent the sample from contacting the air before the test and evaporate the moisture of the sample before the test. The crucible can be punctured before the experiment and this can be done well in the auto sampler during the experiment.

Under normal conditions, the crucible used in the TGA experiment is a 70 μl alumina crucible, but sometimes other special crucibles are needed for thermo gravimetric experiments. If you want a thermo gravimetric test friend to have a more synchronized DSC curve, you can use a 40μL aluminum crucible with a temperature below 600 degrees Celsius. If the sample contains very few volatiles or is very irregular, then use as many samples as possible. Use a larger crucible at this point, e.g. 150 µl alumina crucibles or 900 µl alumina crucibles.

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