Main features: 1. It can be used to determine multiple elements and double elements at the same time It is suitable for trace and ultra-trace analysis of eleven elements such As As, Sb, Hg, Se, Pb, Bi, Sn, Ge, Te, Cd and Zn. 2. The working efficiency of the instrument is doubled Because of the organic combination of eight-way injection valve and peristaltic pump, continuous flow, intermittent injection, double-way alternate injection and alternate analysis are realized. At the same time of cleaning and injecting samples, the other can be analyzed synchronously without cross contamination. 3. The first infrared control and membrane separation gas-liquid separation system With the application of infrared ray control and membrane separation gas-liquid separation system, the waste liquid does not need to be discharged by pump, the gas-liquid separation is more thorough, and the colorless flame is truly realized. The noise level is greatly reduced, the detection limit is greatly improved, and the linear range is widened 4. Automatic ignition of argon and hydrogen flame at low temperature The sensitivity is improved several times and the memory effect is smaller 5. General power supply for high strength hollow cathode lamp and special hollow cathode lamp It provides convenience for users, and users can change the light source at any time according to their needs. 6. Far infrared heating atomizer Using advanced far infrared thermal atomizer, the instrument has fast temperature rise, high constant temperature accuracy and long service life. 7. Automatic control of air path This instrument adopts a large number of advanced circuit control systems, so that the gas circuit can be automatically controlled and protected to ensure the safety of analysis. 8. Safe and reliable Because the liquid circuit system is made of strong anti-corrosion materials, the instrument is safer and more reliable in use 9. Low cost of analysis The consumption of reagents, samples and argon is greatly reduced 10. Analytical Automation in Computer Systems The AF-7500 Windows application automates the analysis process. Users can use this program to realize the functions of sampling, post-processing of spectrogram display machine, generating sample table, calculating results and printing reports. The computer system adopts dual-channel analysis, and can control various states of the instrument according to the parameters set by users, and implement technical actions including automatic ignition, preheating, sectional heating and so on. 11. Compact instrument Due to the adoption of a large number of latest photoelectric technology, the overall volume of the instrument is reduced by 1/2 compared with that of similar products in China, especially suitable for some places with high requirements for instrument space, such as ships. 12. Autoinjector 130-bit large-capacity sample rack, simple structure, accurate and reliable action, small size, light weight, simple connection with the host, manual automatic state fast switching.