The AF400 Simultaneous Double Beam Atomic Fluorescence Spectrometer provides elemental analysis for sub trace detection of hydride-forming elements. The design and functionality provides enhanced sensitivities and reduced interferences for parts per trillion (ppt) detection of Mercury (Hg), Arsenic (As), Cadmium (Cd), Zinc (Zn), Bismuth (Bi), Selenium (Se), Tellurium (Te), Antimony (Sb), Tin (Sn), Germanium (Ge), and Lead (Pb)
AF 400同时双光束原子荧光光谱仪为氢化物形成元素的亚痕量检测提供了元素分析方法。该设计和功能提高了汞(Hg)、砷(As)、镉(Cd)、锌(Zn)、铋(Bi)、硒(Se)、碲(Te)、锑(SB)、锡(Sn)、锗(Ge)和铅(Pb)每万亿(Ppt)检测的灵敏度，降低了干扰。
自动化AF 420是包括：农业、公共卫生、医药、冶金食品和饮料、临床地质、石油化工等多种市场和研究行业的理想元素分析仪器。
Limits of Detection in water:
| Element | Detection Limit (µg/ml) | RSD % |
| Arsenic (As) | <0.001 | <1% |
| Bismuth (Bi) | <0.001 | <1% |
| Cadmium (Cd) | <0.0001 | <1% |
| Germanium (Ge) | <0.05 | <1% |
| Mercury (Hg) | <0.001 | <1% |
| Lead (Pb) | <0.01 | <1% |
| Antimony (Sb) | <0.01 | <1% |
| Tin (Sn) | <0.01 | <1% |
| Tellurium (Te) | <0.01 | <1% |
| Zinc (Zn) | <1.0 | <1% |