For more than 50 years, Rockville-based Tousimis Research Corporation has made critical point dryers and specimen-preparation supplies for electron microscopy, preserving delicate micro- and nanoscale three-dimensional structures. The company dates its ultrapure fixatives to 1962 and introduced its tEPON 812 embedding kit in 1976; its Series C and Autosamdri systems are made in the USA and serve research and industrial facilities worldwide.
Gatan, IncFor six decades, Gatan has made the cameras, energy filters, specimen-preparation equipment and software that help researchers see more through electron microscopy. The AMETEK company serves both transmission and scanning electron microscopy, with a particular focus on turning difficult materials and biological samples into usable imaging and analytical data. Its product-lifecycle guidance and factory service plans also support instruments well beyond their initial sale.WARRENDALE, PA
SPI Supplies, IncSPI Supplies, Inc. supplies and manufactures sample-preparation equipment and consumables for electron, light and scanning-probe microscopy laboratories. Its West Chester operation is especially associated with microscopy staples such as TEM grids, SEM preparation supplies and the BEEM line of embedding products, a brand that traces back to an early-1960s Bronx production shop. The company also provides analytical and laboratory services through its Structure Probe operation.334516WEST CHESTER, PA
TESCAN GROUP, a.sFrom its home in Brno’s electron-optics tradition, TESCAN GROUP, a.s. makes imaging and analysis instruments for scientific and industrial research, including electron microscopes, micro-CT and focused-ion-beam systems. Founded in 1991 by former Tesla engineers, the company has spent more than 35 years turning complex microscopy workflows into practical tools used in more than 80 countries. Now part of Shimadzu Corporation, Tescan also develops specialized systems such as the FemtoChisel femtosecond laser for semiconductor sample preparation and failure analysis.423490WARRENDALE, PA
Electron Microscopy SciencesElectron Microscopy Sciences supplies the specialized tools and materials that clinicians and researchers use to prepare and examine specimens, with a particular focus on electron microscopy. Based in Morgantown, Pennsylvania, the company pairs a broad laboratory catalog with custom services, equipment repair, technical information and hands-on microscopy training through its affiliated Academy. Its own offerings include cryo-EM support products such as C-flat holey carbon grids and the Prepmaster automated specimen-processing system.325998HATFIELD, PA