1Instrument Introduction

AHS-20 is a 20 position fully automatic headspace sampling device that uses valve and quantitative ring injection technology, ensuring reliable results and good reproducibility. The instrument achieves fully automatic operation of samples, with the characteristics of fast running speed and convenient operation,Can be compatible with imported and domestically produced productsUsed with GC and GCMS.

IIworking principle

AHS-20The principle of automatic headspace sampler: Place the sample to be tested in a closed container, heat and raise the temperature to make the volatile components in the sample evaporate from the sample matrix, and then release them into the gas-Liquid (or gas)-Equilibrium is reached in the solid phase, and the upper gas is extracted for chromatographic analysis to determine the composition and concentration of volatile components in the sample.

IIIMain functions and features

1. 7-inch touch screen,Comprehensive and intuitive, capable of real-time monitoring of instrument operation and the current status of each sample;

2Realize Fullauto-runContinuous analysis, unmanned operation, set up analysis program, complete all sample analysis;

3. Automatically locate and calibrate the sample tray to prevent bottle jamming caused by misalignment;

4. The starting and ending bottle positions can be freely set to meet special on-site requirements;

5. Through time programming, automatic functions such as pressurization, sampling, injection, analysis, and post analysis blowback cleaning can be achieved;

6Can start synchronouslyGC、 Chromatographic data processing workstation；

7. 3-channel events, programmable automatic operation, can store 100 methods, can be called at any time, achieving fast startup and analysis;

820Heating furnaceIt can achieve overlapping heating of multiple samples, reduce waiting time, and improve work efficiency;

9Can achieve multiple injections of the same sample for analysis, used for method expansion and research;

10Power on self-test, fault alarm and prompt, temperature overload protection function, increase the safety factor of instrument use;

11The sample transmission pipeline and injection needle are made of inert materials to prevent sample residue and loss;

12Narrow peak shape and good repeatability in headspace injection，Using valve and quantitative ring injection technology, fixed volume and known volume samples, precise temperature control ensures good reproducibility;

13. All sample flow paths have undergone insulation treatment and inert treatment, which greatly reduces analysis residues and maintains the integrity of the sample;

14. After each injection is completed, the system automatically uses inert gas to blow the sampling pipeline and quantitative ring to prevent cross contamination;

15. The instrument is equipped with various domestically produced orThe interface of imported instruments can be connected to domestic and foreign onesGC、GCMSStrong universality.

4、 Main technical parameters

1. Temperature control range in the sample area:

Room temperature -300 ℃, set in increments of 0.1 ℃

2. Temperature control range of valve injection system:

Room temperature -230 ℃, set in increments of 0.1 ℃

3. Temperature control range of sample transfer pipeline:

room temperature—220 ℃ can be set in increments of 0.1 ℃

5. Temperature control accuracy:<± 0.05 ℃;

6. Headspace bottle workstation: 20,Heating station:20 of them

7. Headspace bottle specifications: 20ml, 10ml (50ml, 250ml and other specifications can be customized);

8. Repeatability: RSD ≤ 1.5% (ethanol in 200ppm water, N=5）；

9. Injection volume (quantitative tube): 1ml (optional 0.5ml, 2ml, 5ml);

10. Injection pressure range: 0-0.4Mpa (continuously adjustable);

11. Backblowing cleaning flow rate: 0-400ml/min (continuously adjustable);

12. Effective dimensions of the instrument: 240 * 530 * 430mm;

13. Weight of the instrument: approximately 10kg

14. Total power of the instrument: ≤ 600w