WALTHAM, Mass.--(BUSINESS WIRE)--Thermo Fisher Scientific Inc. (NYSE: TMO), the world leader in serving science, today reinforced its market-leading portfolio of mass spectrometry technologies with the launch of its latest and most advanced instrument lines - the LTQ Velos™ and LTQ Velos™ Orbitrap - at the 57th American Society for Mass Spectrometry (ASMS) annual conference, which runs from May 31- June 4, in Philadelphia.