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同時雙光束原子熒光光譜儀為氫化物形成元素的亞痕量檢測提供了元素分析方法。該設計和功能提高了汞(Hg)、砷(As)、鎘(Cd)、鋅(Zn)、鉍(Bi)、硒(Se)、碲(Te)、銻(SB)、錫(Sn)、鍺(Ge)和鉛(Pb)每萬億(Ppt)檢測的靈敏度，降低了干擾。
自動化AF 420是包括：農業、公共衛生、醫藥、冶金食品和飲料、臨床地質、石油化工等多種市場和研究行業的理想元素分析儀器。
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% |