Description Application Fields Geology, environment, metallurgy, food, biology, medicine, agriculture and plants, light industry and cosmetics. Features Analysis range of element: As, Sb, Bi, Hg, Se, Te, Pb, Sn, Ge, Zn, Cd, etc. Detection limit: As, Sb, Bi ≤ 0.01 ng/mL; Hg ≤ 0.001 ng/mL. Accuracy: ≤ 1%, linear range more than 3 orders of magnitude. Non-dispersive optical system: simple structure, simultaneous measurement of two elements. Automatic control of lamp current, negative high voltage and rpm of peristaltic pump.