1. Product introduction

The headspace sampling device is a sample pretreatment device for gas chromatography analysis. Compared with other sample pretreatment methods, such as solvent extraction and thermal desorption, it is simpler and more practical, with higher work efficiency and reproducible chromatographic analysis results. It is one of the preferred methods for trace analysis by gas chromatography, and it is widely used in:

(1) Petrochemical: Analysis of volatile organic compounds in polymer monomer coatings, etc.;

⑵Environmental Science: Analysis of volatile halogenated hydrocarbons in drinking water and organic toxic volatiles in industrial sewage;

(3) Food industry: Quality control of colored wine, vinegar and soy sauce; acetaldehyde and other residues in packaging materials; 6# solvent residue analysis in leached oil, etc.;

⑷ Spice and flavor: analysis of flavor in beer and tea;

⑸ Others: such as the determination of volatile organic compounds in soil, etc.

2. Product parameters

1. The temperature control range of the sample area: room temperature - 200 °C, set in increments of 1 °C;

2. The temperature control range of the sample transfer pipeline: room temperature - 160 °C, set in increments of 1 °C;

3. The temperature control range of the valve sampling system: room temperature—160°C, set in increments of 1°C;

4. Temperature control accuracy: <±0.5℃;

5. Temperature control gradient: <±0.5℃;

6. Injection pressure range: 0～0.4Mpa (continuously adjustable);

7. Headspace bottle station: 9;

8. Repeatability: RSD<3% (related to GC performance and operating technology);

9. Headspace bottle specification: 20ml (10ml, 50ml and other specifications can be customized);

10. The flow and time of backflushing and cleaning of the sampling system: continuously adjustable;

11. Effective size of the instrument: 200×380×400mm3;

12. The weight of the instrument: about 12 kg;

3. Product Features

1. The heating pipeline adopts low-voltage power supply

2. Single-chip control, keyboard input, LCD display various parameters and working status

3. Headspace bottle, sampling system and sampling (injection) conduit, three-way heating and temperature control at the same time

4. 3 foreign affairs, 8-order time program control, programmable automatic operation

5. There are 9 methods for editing, storing and calling at any time, realizing quick start and analysis

6. The GC and chromatographic data processing workstations can be started synchronously, and the device can also be started by external event programs

7. LCD brightness can be adjusted according to the occasion of use

8. The display board and program control board circuit have self-test function and fault display

9. When the time program is completed, there is an automatic prompt sound function

10. With stopwatch function