Positive Material Identification (PMI) is a fast and non-destructive testing (NDT) method used to verify the elemental composition and grade name of metals and alloys.
PMI is used to verify that supplied materials conform to the proper standards and specifications. Handheld X-ray fluorescence is the most common PMI method, it is portable, cost-effective and allows PMI to be performed in the field, production floor or in the lab.