Semi-Automatic Dual-Channel Primary Thermal Desorption Instrument, JX-4 (CAT#: STEM-AIAE-0535-ZJF)

The JX-4 Thermal Desorption Analyzer is a dual-channel single-use thermal desorption instrument capable of simultaneously analyzing two samples, doubling efficiency. It features three functions: standard sample simulation sampling, thermal desorption, and desorption tube activation. The temperature of the desorption, injection valve box, and injection pipeline can be controlled separately, ensuring sample integrity with no transfer cold points. With simple operation and one-button start, the process is completed automatically. It can be used in conjunction with domestic and imported gas chromatographs.

Dual Channel Desorption Temperature: Room Temperature ~380℃, Temperature Control Accuracy 1℃
Dual Channel Valve Box Temperature: Room Temperature ~240℃, Temperature Control Accuracy 1℃
Dual Channel Sample Temperature: Room Temperature ~240℃, Temperature Control Accuracy 1℃
Simulated Calibration Time: 0-60min
Heating Desorption Time: 0-60min
Sample Injection Time: 0-10min
Desorption Tube Specifications: Φ6mm, Length >120mm

Direct injection capability with strong compatibility, suitable for various domestic and international brands of gas chromatographs. Simple installation without the need for any parameter or setting adjustments on the gas chromatograph, ensuring consistency and integrity of gas chromatography.
The instrument features a microcontroller-based control system, integrating multiple controls into a small, compact, and powerful unit, with expandable functionality.
Utilizes high-precision pressure regulators and needle valves for precise pressure control and stable gas flow.
Dual-channel design allows simultaneous analysis of two samples, reducing analysis time and increasing efficiency.
All gas lines are constructed using passivated and polished 316 stainless steel, with sealing rings made of PTFE material, providing high temperature resistance and no volatile emissions.
Heating gas lines utilize imported high-inertia deactivation stainless steel, with PTFE sealing materials for high-temperature resistance and no volatile emissions.
Precision high-temperature resistant six-way valves are used in the heating valve box, with no dead volume and a maximum operating temperature of 240°C. The six-way valves are driven by motors, eliminating the need for external driving gas and ensuring ease of use.
Integration of the heating valve box and heating gas line design reduces intermediate links, minimizing issues related to low resolution caused by dead volume.
Optimal reducing fittings are designed based on calculations of the diameter of the analytical tube and gas path, minimizing dead volume at connection points between the analytical tube and gas path.
Combines standard sample simulation sampling, thermal desorption, and analytical tube activation into one unit, providing comprehensive and cost-effective functionality.

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