Introduction: The AHS-6890 high-pressure automatic headspace sampler is a new type of gas chromatograph sample pretreatment equipment newly developed by our company with multiple innovations and intellectual property rights. The bottom line of cost performance of domestic headspace samplers has also been brushed, setting a new benchmark. In the daily analysis process of gas chromatograph, most of the error size is 10% from the operating instrument, and 90% is from the quality of sample pretreatment. The advantages and disadvantages of different sample pretreatment technologies and methods are very different. If headspace sampling (gas extraction) gas chromatographic analysis is used, the volatile compounds in almost any sample can be analyzed accurately, simply and quickly. Because headspace sampling is extremely easy to achieve solvent-free extraction of liquid and solid samples, it can be said to fundamentally eliminate possible errors and problems in sample pretreatment methods such as adsorption and desorption and solvent extraction. Features: 1. The heating pipeline adopts 18V low voltage power supply; 2. Integrated design, compact structure, easy to operate; 3. Metal isothermal body heating temperature control headspace bottle, with high temperature control accuracy, small gradient, good temperature consistency, simple and reliable, reducing various disadvantages that may be caused by oil bath heating and constant temperature; 4. Equipped with external loading gas adjustment system, headspace sampling analysis can be carried out without any modification or change to the GC instrument. If the original instrument carrier gas is used, the device can be used as an automatic sampling system module; 5. A set of headspace sampling device can supply several GC samples for analysis at the same time, which greatly improves work efficiency; 6. Through foreign affairs time programming, the functions of pressurization (pumping), sampling, injection, analysis and backflushing after analysis are automatically realized; 7. If the principle of high-pressure injection is used (no six-way valve and loop), the adverse effects of valve injection are reduced; 8. Sample sampling and sample injection transfer tube have automatic backflushing function to avoid cross-infection of different samples; 9. For the analysis of active substances, a 0.53mm elastic quartz tube can be selected as the sample transfer tube; 10. Sampling and injection needles have a variety of specifications, which can be easily replaced to meet the needs of different GC instrument injection ports; 11. It is easy to realize repeated injections of the same sample bottle, which is convenient for method development and research; 12. Imported pneumatic components are used as key components for driving; 13. A measuring instrument for judging the sealing performance of the headspace bottle is attached. technical parameter: Temperature control range of the sample area: room temperature—200°C in increments of 1°C, and the heating power is about 400W; Temperature control range of valve sampling system: Room temperature—160℃ in increments of 1℃; heating power is about 60W; Temperature control range of sample transfer pipeline: Room temperature—160℃, in increments of 1℃, the heating power is about 40W; Temperature control accuracy: <±0.5℃; Temperature control gradient: <±0.5℃; Headspace bottle stations: 9; Headspace bottle specifications: Standard 20ml (10ml 50ml and other specifications can be customized); Repeatability: RSD <1% (related to GC performance); Injection pressure range: 0～0.4Mpa (continuously adjustable); Backflush cleaning flow: 0～20ml/min (continuously adjustable); The effective size of the instrument: 200×360×420mm3; The weight of the instrument: about 12 kg.
Introduction: The AHS-6890 high-pressure automatic headspace sampler is a new type of gas chromatograph sample pretreatment equipment newly developed by our company with multiple innovations and intellectual property rights. The bottom line of cost performance of domestic headspace samplers has also been brushed, setting a new benchmark. In the daily analysis process of gas chromatograph, most of the error size is 10% from the operating instrument, and 90% is from the quality of sample pretreatment. The advantages and disadvantages of different sample pretreatment technologies and methods are very different. If headspace sampling (gas extraction) gas chromatographic analysis is used, the volatile compounds in almost any sample can be analyzed accurately, simply and quickly. Because headspace sampling is extremely easy to achieve solvent-free extraction of liquid and solid samples, it can be said to fundamentally eliminate possible errors and problems in sample pretreatment methods such as adsorption and desorption and solvent extraction.
