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  • Energy Dispersive Spectrometer (EDS)

    Energy Dispersive Spectrometer (EDS): For qualitative and semi-quantitative analysis of elements, point, line and surface scanning tests can be carried out for powder or relatively small solid samples.

    EDS is used to analyze the type and content of elements in the micro-region of the material. With the use of scanning electron microscope and transmission electron microscope, the element distribution in the micro-region of the material can be analyzed qualitatively and quantitatively within 1-3 minutes.


    • Solid angle: Determines the size of the signal, the larger the angle, the better.
    • Detection angle: Theoretically the larger the angle, the better.
    • Energy resolution: The highest level of energy spectrometer resolution can reach 121 eV.
    • Detection element range: Be4~U92.


    • EDS is the most convenient, rapid, accurate and reliable analysis method for micro-area composition analysis.
    • The stability and reproducibility of the data are good.
    • Its accuracy is second only to WDS, which can reach 2-10%.
    • The quantitative error of the main element of the median atomic number without overlapping peak is 2-3%,
    • The detection limit is 0.1-0.5%.
    • The depth of measurement is in the nanometer-micron level.

    Applications & industries

    • Analysis of inorganic or organic solid materials such as polymers, ceramics, concrete, biology, minerals, fibers, etc.
    • Phase analysis, composition analysis and morphological composition identification of inclusions in metallic materials.
    • The surface coating of solid materials can be analyzed, such as the detection of metallized film surface coating.
    • Gold and silver jewelry, gem jewelry identification, archaeology and cultural relics identification, as well as criminal investigation identification and other fields.
    • Carry on the qualitative and quantitative analysis of the micro-area composition of the material surface, and analyze the surface, line and point distribution of the elements on the material surface.

    EDS specific analysis function

    • Qualitative analysis
    • Quantitative analysis
    • Analysis of element surface distribution

    Energy Dispersive Spectrometer (EDS)

    Sample requirements

    The EDS has no special requirements on the surface of the sample, it needs to be dry solid and the stage can be placed, non-magnetic, radioactive and corrosive. If the conductivity is poor, it can be sprayed with gold or carbon.

    In conclusion, T,C&A Lab can offer EDS services that can solve your materials related problem. Finally, please complete the form to have an expert discuss your EDS needs.


    1. Han, Jin, et al. Toward Bi3+ red luminescence with no visible reabsorption through manageable energy interaction and crystal defect modulation in single Bi3+-doped ZnWO4 crystal. Chemistry of Materials 29.19 (2017): 8412-8424.

    Note: this service is for Research Use Only and Not intended for clinical use.

    T,C & A LAB is an independent lab providing quality or custom testing, characterization and analysis of a variety of materials. Our engaged experts are ready to help you.

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