The G3250-220 Wide Range Segmented Gamma Scanner (WR-SGS) builds on the segmented gamma scanning technique to measure the radionuclide content of waste drums. The technique is applicable to the measurement of activity from extremely low levels to extremely high levels and across a large range of densities. It is capable of measuring waste in a variety of matrices and chemical forms and is particularly applicable when the chemical form and the relationship between the nuclide and matrix are unknown.