In the international standard classification, xrf test involves: Inorganic chemicals.
German Institute for Standardization, xrf test
DIN 51001 Bb.1:2010 Testing of oxidic raw materials and basic materials - General bases of work for X-Ray fluorescence method (XRF) - General survey on disintegration methods referred to groups of materials for the determination of test specimens for XRF
DIN 51001 Bb.1:2003 Testing of oxidic raw materials and basic materials - General bases of work for X-ray fluorescence method (XRF) - General survey on disintegration methods referred to groups of materials for the determination of test specimens for XRF
DIN 51001 Beiblatt 1:2010-05 Testing of oxidic raw materials and basic materials - General bases of work for X-Ray fluorescence method (XRF) - General survey on disintegration methods referred to groups of materials for the determination of test specimens for XRF