This energy dispersive X-ray fluorescence (ED-XRF) unit provides rapid qualitative non-destructive elemental analysis. It features a rhodium X-ray source and a silicon-based detector and is capable of identifying most elements heavier than magnesium in three minutes or less with a spectrum from 1-40 keV. Normally it gives qualitative results, e.g. trace element identification and relative comparisons of similar samples. Quantitative analysis is possible but more difficult, because the user must create a set of calibration standards for each element of interest.