New AEI/LEICA Tungsten Hair Pin Type Electron Microscope Filaments, Box of 10

Tungsten Hair Pin Type Electron Microscope Filaments for LEO/LEICA/CAMBRIDGE/AEI

Box of 10
Tungsten Filament:  Standard Tip
Base Type:  AEI, Cambridge, Nanoquest (Vickers), Leica, Leo, Zeiss (EVO)

Base Dimensions (mm)
Diameter of Ceramic Disc: 12.0
Diameter of Pins: 1.0
Center Distance of Pins: 6.45

SPI Supplies tungsten hairpin filaments are the standard type filaments widely used in Scanning Electron Microscopes, Transmission Electron Microscopes and Microprobe systems. Produced to the original equipment manufacturer's specifications, these high-quality filaments are made using special tools to ensure the correct shape so as to generate the optimum electron beam. Manufactured from high-grade tungsten. 

Tungsten filaments are also called cathodes or electron emitters or electron sources. We are oftentimes asked about "expected filament lifetimes" and that is a hard question to answer. Quite a bit is already known as to the factors that influence filament lifetimes; be sure you are aware of how you can get the maximum lifetime out of your tungsten filaments, be they new or retipped. In addition, the quality of the cleaning of the wehnelt cap when changing a filament can be, at least in some instruments, the single most critical factor affecting filament lifetimes.