Model GD320N Atomic Absorption Spectrophotometer Making the characteristic concentration of As, Se, Sb, Bi, Pb, Sn, Te, Ge, In, Model GD320N Atomic ... .Hydride generator (Totally automatic): Making the characteristic concentration of As, Se, Sb, Bi, Pb, Sn, Te, Ge, In, Tl, Cd and ... with I/O portPrinterOverall dimension & weight: Model GD320N Atomic Absorption Spectrophotometer