Tungsten filaments for scanning electron microscopes

Replacement tungsten filaments for Cambridge/LEO/Zeiss, AEI, TESCAN, JEOL, ISI & Phillips/FEI/Thermo Fisher instruments

Agar Scientific's tungsten filaments are manufactured in our own production labs to the highest standards. The filaments are precision made in custom engineered jigs to ensure complete accuracy of every filament to gain maximum image quality and life expectancy. All filaments are pre-conditioned by flashing under vacuum at temperatures above the normal operating level and are then checked for accuracy of centring. Filament assemblies having alignment screws are subsequently adjusted using a light microscope to ensure that they are ready for immediate operation in electron microscopes.

LaB₆ filaments

Kimball Physics single crystal lanthanum hexaboride (LaB₆) cathodes are available for most makes of electron microscopes and other electron beam instruments where a suitable gun vacuum in the region of 10^-7 Torr is attainable. For SEM applications, the higher brightness provides better imaging resolution and improved efficiency for microanalysis. Alternatively, LaB6 filaments may be used where a long filament life is important; lifetimes in excess of six months continuous operation are regularly achieved.

Agar Filaments for Cambridge, LEO, Zeiss & AEI
High-quality replacement tungsten filaments for Cambridge, LEO, Zeiss & AEI electron microscopes. Box of 10.
Average lead time: 1 to 59 days
From £93.15
Average lead time: 1 to 59 days
Agar Filaments for TESCAN VEGA series AGA047
High-quality replacement tungsten filaments for TESCAN VEGA electron microscopes. Box of 10.
In Stock
£316.29
In Stock

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Agar Filaments for FEI AGA086
High-quality replacement tungsten filaments for FEI electron microscopes. Box of 10.
Average lead time: 89 days
£247.27
Average lead time: 89 days

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Agar Filaments for JEOL (K Type) AGA092
High-quality replacement tungsten filaments for JEOL (K-Type) electron microscopes. Box of 6
Average lead time: 89 days
£284.24
Average lead time: 89 days

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Electron Microscope Filaments
Replacement filaments for Hitachi, JEOL and Zeiss electron microscopes.
Average lead time: 20 to 44 days
From £297.20
Average lead time: 20 to 44 days
LaB6 Lanthanum Hexaboride Filaments
Kimball Physics single crystal lanthanum hexaboride (LaB6) cathodes are available for most makes of electron microscopes and other electron beam instruments.
Average lead time: 1 to 89 days
From £972.85
Average lead time: 1 to 89 days