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Agar Scientific specialises in producing a wide range of specimens specifically for SEM test and calibration where quantification or high resolution results are required.

 

SEM resolution is tested in terms of a combination of criteria, namely resolved gaps and the number of grey levels in the image. This is to ensure that the resolution has not been distorted by using the contrast to maximise visibility of edges. High resolution images ideally should show fine detail together with a lack of noise, evidenced by a good range of grey levels.

For assessments of resolution in scanning electron microscopes, we have developed a range of gold on carbon and tin on carbon test specimens. These specimens are suitable for tests of SE and BSE imaging and also for chemical mapping in high resolution systems such as in Auger scanning instruments. The specimens can be supplied on most types of specimen stub.

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39 products available

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  1. Boron substrates for SEM/EDX micro analysis
    Diamond polished, crystalline boron surfaces for semi-quantitative SEM/EDX analysis of carbonaceous samples, e.g. soot.
    Average lead time: 29 days

    POA

    Average lead time: 29 days
  2. 1000 mesh calibration grid AGS1965
    A single 1000 mesh 3mm diameter TEM grid for calibration. Supplied in a vial.
    In Stock

    POA

    In Stock
  3. Fine mesh
    This is available in copper, nickel or gold, in 1000, 1500 and 2000 mesh (1000, 1500 or 2000 repeat distance per inch), ie. 25, 18.75 and 12.5 µm.
    Average lead time: 1 to 13 days

    POA

    Average lead time: 1 to 13 days
  4. Electroformed mesh - Nickel
    Electroformed mesh in Nickel with an approximate thickness of 5 micron. Available 5, 20, 70, 80, 100, 200, 333, 400, 500, 750, 1000, 1500 and 2000 mesh sizes.
    Average lead time: 6 to 69 days

    POA

    Average lead time: 6 to 69 days
  5. Electroformed mesh - Copper
    Electroformed mesh in Copper with an approximate thickness of 5 micron. Available 5, 20, 70, 80, 100, 200, 333, 400, 500, 750, 1000, 1500 and 2000 mesh sizes.
    Average lead time: 6 to 34 days

    POA

    Average lead time: 6 to 34 days
  6. Electroformed mesh - Gold
    Electroformed mesh in Gold with an approximate thickness of 5 micron. Available 5, 20, 70, 80, 100, 200, 333, 400, 500, 750, 1000, 1500 and 2000 mesh sizes.
    Average lead time: 6 days

    POA

    Average lead time: 6 days
  7. Gold on carbon AGS168 - resolution test specimen
    Resolution test specimen with a particle size range from approximately 5 - 150nm.
    Average lead time: 1 to 27 days

    POA

    Average lead time: 1 to 27 days
  8. Polystyrene latex particles
    This range of polystyrene particles is excellent for SEM calibration purposes.
    Average lead time: 1 to 27 days

    POA

    Average lead time: 1 to 27 days
  9. Polystyrene latex spheres
    This range of polystyrene latex spheres can be used for either SEM or TEM applications.
    Average lead time: 1 to 29 days

    POA

    Average lead time: 1 to 29 days
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LEAD TIMES: Average Lead Times are shown individually in working days for any products not currently in stock. Whilst we regularly update this, actual Lead Times can vary due to supply chain fluctuations.
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