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Melting point meter is mainly used to identify the basic means of the nature of the substance, can also be used to detect purity, so that the melting point instrument in the chemical, drugs play an important role, it can increase the instrument is the service life. The use of the melting point instrument is as follows:
1. The sample must be dried according to requirements and crushed in a dry and clean rolling body. The free-falling percussion capillary is used to fill the sample and the filling height is consistent. The specific requirements should meet the requirements of the Pharmacopoeia.
2. When inserting and removing the capillary, care must be taken to avoid breaking.
3. Different rates of linear heating, greenhouse results are also inconsistent, requiring the specification of certain norms.
4. The sample to be measured is preferably filled with five capillaries at a time. After the measurement, the average value of the middle three readings is taken as the measurement result to eliminate accidental errors caused by capillaries and sample preparation and filling.
5. Before inserting the capillary into the instrument, use a soft cloth to remove any contaminants from the outside to prevent the oil bath from getting dirty.
6. If you need to change the oil bath, follow the method described in Preparation before use.