Mass Spectrometry and Chromatography Equipment Supplies
Scientific Repairs and Manufacturing
Founded in 1978 to provide mass spectrometer consumables laboratory instrument parts, filament wire, electron multipliers, capillary columns and vacuum system components at reasonable prices, SIS has grown to be a recognized leader in manufacturing assemblies, supplies and services for the scientific and medical communities worldwide. The same innovation and dedication to quality that built our early following of loyal customers is still evident in the products we make and sell, even as we expand to meet the needs of new analytical techniques.
News & Highlights
SIS news, deals and latest highlights!

Electron Multipliers - wide selection, from the leaders in multiplier design
NIST 23 & Wiley libraries of mass spectra
- identify unknown compounds with the world's most trusted libraries.
SIMION software - design & simulate
mass spec's and particle optics systems