Pfeiffer Vacuum, Nashua, N.H., released its 2002-2004 Mass Spectrometer Catalog. The 116-p catalog covers mass spectrometry fundamentals including how mass spectrometer systems work, mass filter theory and ion source design. The catalog also describes measurements of externally generated ions, such as plasma diagnostics and SIMS (secondary ion mass spectrometer) applications. Various pumping options are depicted along with different inlet arrangements, as well as product specifications and application examples.