The concept of gas chromatography: A separation technique that uses gas as the mobile phase and achieves the separation of complex samples based on the differences in forces such as adsorption and distribution between components and stationary phases. The separation object is a volatile, thermally stable sample with a boiling point generally not exceeding 500 degrees.

TA Company's thermogravimetric analyzer in the United States uses infrared heating to change the temperature during the experimental process. The main instrument models used in this form of heating include TGA 2950 thermogravimetric analyzer, TGA Q5000IR thermogravimetric analyzer, Discovery TGA thermogravimetric analyzer, and TGA5500 thermogravimetric analyzer. In the heating furnace of this type of instrument, four evenly placed infrared tubes are used for heating, and the infrared tubes and sample baskets are lined with quartz glass material (Figure 1). During the long-term use of the instrument, the lifespan of the infrared lamp tube will gradually decay with the extension of usage time. In addition, the decomposition products during the experiment will also react with the quartz inner lining tube, which can cause damage or even damage over time. Long term use of infrared light tubes can cause a decrease in brightness, and damage to the quartz inner lining tube can also cause serious pollution to the furnace body, resulting in a decrease in the actual temperature reached by the instrument and inaccurate measurement temperature. Therefore, the quartz tube and infrared lamp tube lining of the thermogravimetric instrument should be replaced regularly to ensure the normal operation of the instrument.

Standard crucible. As needed, it can be completely sealed or drilled on the cover to obtain a self generated atmosphere, or a completely freely exchanged atmosphere

A Mettler crucible is a vessel or melting pot made of highly refractory materials such as clay, quartz, porcelain clay, or more difficult to melt metals. Mainly used for evaporation, concentration, or crystallization of solutions, and for burning solid substances.

What are the powerful characteristics of gas chromatography? Strong analytical ability? Is the application scope widespread? Accurate quantification? These are indeed the characteristics of gas chromatography, but what Kai is about to say is that the abundance of consumables and accessories for gas chromatography often makes novice users feel overwhelmed. So, let me take you to a deeper exploration

When a solid needs to be heated by high fire, a crucible must be used. When using a crucible, the lid is usually tilted on top of the crucible to prevent heated objects from jumping out and allow air to enter and exit freely for possible oxidation reactions. Because the bottom of the crucible is very small, it usually needs to be installed on a mud triangle before it can be directly heated with fire. The crucible can be placed upright or diagonally on an iron tripod, or it can be placed on its own according to experimental needs. The crucible should not be placed on a cold metal table immediately after heating to avoid cracking due to rapid cooling. It should not be placed immediately on a wooden tabletop to avoid scalding the tabletop or causing a fire. The correct way is to put it on the iron triangle for Free cooling, or put it on the asbestos net for slow cooling. Please use the crucible pliers to enter the crucible