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Two-stage thermal desorber with automatic sample injection JX3
Product Description The JX3 is a sample preparation device that is used in conjunction with a gas chromatograph to determine volatile organic compounds in the environment at minimum detectable concentrations at the ppb level. JX-3 not only meets the requirements...
Description
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Product Description
The JX3 is a sample preparation device that is used in conjunction with a gas chromatograph to determine volatile organic compounds in the environment at minimum detectable concentrations at the ppb level. JX-3 not only meets the requirements of GB50325-2020 Indoor Air Pollution Control Standards for benzene and total volatile organic compounds (TVOC) in indoor air, but can also be used in the following areas:
1. Occupational safety, industrial hygiene and environmental monitoring;
2. Express identification of unknown atmospheric pollutants;
3. Analysis of aromatic substances and fragrances;
4. Assessing the consequences of accidents with the release of toxic substances (determining the time for the safe return of personnel to the scene of the incident);
5. Security monitoring of the perimeter of chemical weapons warehouses;
6. Quality control in the production of polymers and packaging materials;
7. Assessing the purity of pharmaceutical solvents and products;
8. Analysis of residues in drugs and forensic samples;
9. Analysis of patients’ exhaled air, volatile drug metabolites in the blood, etc.
Specifications
JX3 is a proprietary product of Shandong Jinpu Analytical Instrument Co., Ltd., fully complies with the requirements of GB50325 and GB18883 analysis methods, and has an upgraded gas sample injection circuit. The device uses a low-temperature cold adsorption trap, rapid heating followed by instantaneous desorption, and automatic sample injection valve switching, which minimizes the influence of human error on the results and increases the reproducibility of experimental data.
Working principle:
An adsorption tube containing a sample of a certain volume is placed in a thermal desorber and heated to desorption of adsorbed substances. After capture in a cold trap and high-temperature flash evaporation, the substances enter the inlet port of a gas chromatograph through a thermostated transport line and are further separated on a chromatographic column.
Device features:
♦ Easy to install - does not require changing the chromatograph parameters, maintaining its full functionality.
♦ Easy to use - after setting the parameters, just press the “Start” button to automatically perform a full cycle of desorption, sample injection and activation.
♦ All sections of the gas line are thermostatically controlled, which reduces sample adsorption on the walls of the gas line.
♦ High safety - the device is equipped with a separate grounding.
Main technical parameters of the device
1. Primary desorption heating range: 40°C—380°C, temperature control accuracy 1°C
2. Sample injection valve heating temperature: 50 °C—240 °C, temperature control accuracy 1 °C
3. Sample pipeline heating temperature: 50 °C—240 °C, temperature control accuracy 1 °C
4. Secondary desorption temperature range: -35 °C—400 °C
5. Secondary desorption heating rate: ˃3000℃/min
6.Desorption tube characteristics: diameter ≤6.5mm, length ≥120mm
7.Desorption time: 0-60 minutes
8. Sample injection time: 0–10 minutes
9. Simulated sampling time: 0-60 minutes
10. Sampling speed during simulation: 16—160ml/min
11. RSD: ≤3% (benzene in 0.05ug methanol)
12. Power: 500W
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