Main Applications 

Applicable to environmental monitoring stations, third-party testing agencies, scientific research institutions, semiconductors, new energy, biomedicine and related enterprises for the pre-concentration treatment system of volatile organic compounds in gas samples.

Technical parameters

Detection limit﹕0.1ppbv

Concentration rate﹕＞1000﹕1 

Reproducibility﹕≤3%RSD 

Injection range﹕4~2000ml

Ultra-low temperature control accuracy: ±2℃

Maximum heating rate: 10000℃/min 

Working environment: Temperature 0~50℃﹔  Humidity 0-95%RH 

Power supply voltage: 220V/50Hz±10% 

Dimensions: width 300x height 450x depth 450mm

Performance characteristics

1 The three-stage cold trap method has strong applicability

The fast sample transfer mode is adopted to make the VOCs in the focusing trap quickly enter the chromatographic column, and realize secondary focusing when transmitting in the column tube, so as to ensure a sharper peak shape. It complies with the current national standard HJ759-2015, and has higher analysis efficiency for 117 VOCs in various scene samples such as ambient air, indoor air, and exhaust gas from pollution sources, especially 13 aldehydes and ketones.

2. Wide applicability of high and low concentrations

The system has a built-in quantitative loop, with a concentration rate of more than 1,000 times, which meets the injection application requirements of high-concentration sample analysis, effectively improves the detection limit of the analytical instrument, and has an accuracy better than the national standard.

3. Fully automated injection

Sequence editing, automatic system operation, and automatic error reporting. When the number of samples is higher than 19, 4 automatic samplers can be connected to achieve unattended injection. Simple operation, record process data, and report printing to support quality control.

4 Good compatibility and powerful functions

It can be paired with imported or domestic sampling cans and air bags, and is compatible with mainstream GC or GC-MS on the market; it can independently inject 4 channels, and can connect multiple automatic samplers; it can establish a unique analysis method based on the characteristics of the compound on the preset analysis method.

5 Stable operation and intelligent baking

The composition of the gas path is richer, more flexible, and more variable, and it can adapt to more advanced analysis methods. And it is more accurate and reasonable in gas path switching and time control. Rich gas path changes and precise control can greatly improve the accuracy of the instrument. When the GC delay time reaches 5 minutes before the end, preheat the cold trap 3 in advance to remove residual moisture to ensure the consistency of each baking, avoid the influence of impurities and water on the system and analysis results, and improve the stability of the analysis.

6 Application of deep cooling technology

The unique liquid nitrogen cooling module technology allows liquid nitrogen to directly reach the core of the trap during cooling, achieving rapid cooling, improving the cooling rate and temperature control sensitivity, and reducing liquid nitrogen consumption. The application of deep cooling technology can analyze the determination of 8 sulfur-containing organic compounds.