1. Initial melting point: The temperature at which the first drop of liquid begins to appear on the capillary wall is the initial melting point (under normal circumstances, discoloration and shrinkage of the sample are not counted).

2. Final melting point: The temperature at which the sample in the capillary is completely liquefied is the final melting point of the sample.

3. Softening point: the temperature at which the sample is softened by heating, and the sample and the steel ball fall together and come into contact with the bottom surface.

4. Heating weight loss: the amount of substances volatilized after heating. It is related to temperature and time.

5. Ash: the amount of ash residue remaining after heating and burning.

6. Zinc content: the percentage of zinc content in the substance.

7. Sieve residue: The percentage of the amount that the sample cannot pass through the sieve. The sieve residue is the opposite of fineness, and fineness is the number of meshes that the sample passes through the sieve.

8. Diameter: The diameter of the sample particle or particle.

9. Purity: The amount of pure substance in the sample.

10. Content: the amount of the sample substance contained.