DIN 51396-2
DIN 51396-2 Testing of lubricants - Determination of wear elements - Part 2: Wavelength dispersive X-ray fluorescence spectrometry (XRF)
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2008
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2008