Introduction to our gas chromatography
Our gas chromatography (GC) is a widely used separation technique in analytical chemistry for the separation and analysis of compounds that can evaporate without decomposition. It achieves the analysis of complex mixtures by separating the components in the sample between the gas phase and the stationary phase.
Theory of our GC
The core principle of gas chromatography is to use the distribution difference of compounds between the gas phase (mobile phase) and the stationary phase (stationary phase) for separation. The mobile phase is usually an inert gas such as helium (He), nitrogen (N ₂), or argon (Ar). While the stationary phase can be solid or liquid, depending on the type of chromatography used. In gas chromatography, the sample is injected into the chromatography column. And as the mobile phase is pushed, the various components in the sample interact with the stationary phase inside the column, passing through the column at different speeds and ultimately being detected by the detector.
Instrument composition
Carrier gas system: provides a stable mobile phase, usually using inert gases such as helium and nitrogen.
Sample injection system: Introduce the sample into the chromatographic column, usually through the injection port.
Chromatographic column: It is the core component of chromatographic separation. Which can be a packed column or a capillary column, selected according to the complexity and boiling point range of the sample.
Temperature control system: used to control the temperature of chromatography columns, vaporization chambers, and detectors to ensure separation efficiency and detection accuracy.
Detector: Used to detect components flowing out of chromatographic columns, common detectors include thermal conductivity detector (TCD), flame ionization detector (FID), electron capture detector (ECD), etc.
Application of our GC
Purity analysis: used to determine the purity of a specific substance.
Mixture separation: used for separating and analyzing various components in a mixture, and determining their relative content.
Compound identification: In some cases, gas chromatography can help identify unknown compounds.
Preparation chromatography: In preparation chromatography, gas chromatography can be used to separate pure compounds from mixtures.
Features of our GC
- Adopting a 7-inch touch screen LCD display for real-time display.
- Possess core temperature control development technology, PID temperature control system, utilizing the characteristics of bus development technology. Adopting control chips, and dual over temperature protection of temperature control software and hardware. Making the temperature control system run for a long time, reliable and durable.
- Adopting a diaphragm type stabilizing valve group, it is earthquake resistant, drop resistant, highly stable, and has a stable output flow rate. The fluorine rubber sealing gasket is corrosion-resistant and durable.
- The carrier gas has pressure protection function. When the gas pressure drops to 0.4mpa. The instrument automatically cuts off the power supply to effectively protect the safety of the chromatographic column.
- Advanced 10/100M adaptive Ethernet communication interface is adopted, supporting network reverse control.
- Implement FID automatic ignition, fire monitoring, and automatic triggering.
- The automatic cooling system for the rear door adjusts the required switch angle through temperature compensation.
- Support network reverse control, all instrument parameters can be controlled through computer reverse control software, digital transmission, bidirectional communication, mature and stable technology, eliminating the need for external acquisition cards on workstations. At the same time, there is also an analog output port that supports connection to any chromatographic workstation.
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