Profile: TMS Vacuum Components specializes in the design & manufacture of precision components for the scientific / analytical industries, from mass spectrometers, surface electron microscopy to environmental analysis and semiconductor markets. We provide filaments, glass to metal seals and phosphor screens. Filaments can be supplied in various forms, from wire (straight or coiled) and from ribbon. The materials used include tungsten, rhenium and iridium. Our phosphor screens are supplied with ITO (indium tin oxide) or Al (aluminum) coatings to dispel charge.