EM Maintenance Parts

Electron microscopes depend on parts that wear out. SPI supplies tungsten and LaB₆ filaments, platinum and molybdenum apertures, scintillators and YAG viewing screens, and silicon and conductive AFM probes.

SPI Supplies — EM Maintenance Parts

Overview

Certain microscope components are consumable by design. A tungsten filament has a finite life measured in tens of hours and is expected to be replaced; LaB₆ cathodes last far longer and give greater brightness, at higher cost and with a stricter vacuum requirement. Apertures accumulate contamination and eventually degrade beam quality, so platinum and molybdenum discs are replaced on a routine schedule. Scintillators lose efficiency as they age, dimming the secondary electron image until the detector is refurbished. AFM probes are the extreme case — a tip may last a single session, and both silicon probes for general imaging and conductive platinum-coated probes for electrical modes are ordered in quantity. Keeping these in stock is the difference between a microscope that runs and one that waits.

Manufacturer: SPI Supplies — USA

Local sales, installation, and technical support in Bangladesh by trained local engineers.

Models

  • SPI Supplies Platinum Disc Apertures — EM Maintenance Parts

    Platinum Disc Apertures

    Platinum disc apertures are precision-drilled metal discs used to define the electron beam path in the condenser and objective lens systems of SEMs and TEMs.

  • SPI Supplies Molybdenum Disc Apertures — EM Maintenance Parts

    Molybdenum Disc Apertures

    Molybdenum disc apertures are the alternate metal-aperture line offered alongside platinum, made to the same exacting standards for hole size and hole placement.

  • SPI Supplies Tungsten Filaments — EM Maintenance Parts

    Tungsten Filaments

    Tungsten filaments are hairpin-type electron-source cathodes used in the electron guns of thermionic-emission SEM and TEM instruments.

  • SPI Supplies DENKA M-3 LaB6 Filaments / Cathodes — EM Maintenance Parts

    DENKA M-3 LaB6 Filaments / Cathodes

    DENKA M-3 lanthanum hexaboride (LaB6) filaments are single-crystal electron-gun cathodes offered as a higher-brightness alternative to tungsten hairpin filaments.

  • SPI Supplies P-47 Powder Scintillators — EM Maintenance Parts

    P-47 Powder Scintillators

    P-47 powder scintillators are the SEM detector scintillators with the fastest response time in the SPI Supplies lineup, well under 80 ns.

  • YAG / YAP Single Crystal SEM Scintillators

    Discs are supplied pre-sized for specific detector mounting geometries across major SEM brands.

  • TEM YAG Viewing Screens

    Screens are available across a range of standard diameters and two thickness options to match different TEM viewing screen assemblies.

  • SPI Supplies SPARK Pt Conductive AFM Probes — EM Maintenance Parts

    SPARK Pt Conductive AFM Probes

    SPI Supplies distributes the line in three resonant-frequency variants, 70, 150, and 350 kHz nominal, sold in packs of 10.

  • SPI Supplies Scout Silicon AFM Probes — EM Maintenance Parts

    Scout Silicon AFM Probes

    Rigorous inspection during manufacturing keeps spring constant and resonant frequency variation to a minimum from probe to probe.

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