... As, Se, Sb, Bi, Pb, Sn, Te, Ge, In, Model GD320N Atomic Absorption SpectrophotometerCharacteristics A Build-in computer data processing ... lamp and background, multi-linear and nonlinear curves fitting, various parameters and working curves displayed in screen and report printing ... are available.Software with I/O portPrinterOverall dimension & weight: Model GD320N Atomic Absorption Spectrophotometer