Agar Scientific

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Calibration & test specimens

Calibration & test specimens

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.

GELLER REFERENCE STANDARDS

CERTIFIED PARTICLE SIZE STANDARDS

MAGNIFICATION CALIBRATION

RESOLUTION & GREY LEVEL TEST SPECIMENS

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  1. Premium Boron surface approx 2mm² on a 1cm² triangle

    Boron substrates for SEM/EDX micro analysis

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    !NEW!

    Diamond polished, crystalline boron surfaces for semi-quantitative SEM/EDX analysis of carbonaceous samples, e.g. soot.

  2. 1000 mesh grid

    1000 mesh calibration grid

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    A single 1000 mesh 3mm diameter TEM grid for calibration. Supplied in a vial.

    Part no: AGS1965

  3. Fine mesh

    Fine mesh

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    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.
  4. Electroformed mesh - Nickel

    Electroformed mesh - Nickel

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    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.

  5. Electroformed mesh - Copper

    Electroformed mesh - Copper

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    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.

  6. Electroformed mesh - Gold

    Electroformed mesh - Gold

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    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.

  7. Chessy test specimen

    Chessy test specimen

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    The Chessy test specimen comprises more than 1.6 million gold squares on silicon which form a four-fold chequerboard pattern in an area of 5mm square.

    Part no: AGS171

  8. Polystyrene latex particles

    Polystyrene latex particles

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    This range of polystyrene particles is excellent for SEM calibration purposes.
  9. Polystyrene Latex particles

    Polystyrene latex spheres

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    This range of polystyrene latex spheres can be used for either SEM or TEM applications.
  10. Monosized microsphere size standards 1 - 1000um

    Monosized microsphere size standards 1 - 1000um

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    These highly uniform polystyrene spheres are calibrated by NIST standardised methods which include photon correlation spectroscopy, transmission electron microscopy and light microscopy.
  11. SEM Resolution test specimen - gold on carbon

    Gold on carbon AGS168 - resolution test specimen

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    Resolution test specimen with a particle size range from approximately 5 - 150nm.
  12. MRS-3 EM reference standard

    Geller reference standard MRS-3

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    The MRS-3 is a universal magnification calibration standard suitable for a wide range of instrumentation. Magnifications from 10X to 50,000X. 2µm minimum pitch. Traceable to national labs for ISO9000 and ISO17025.
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Items 1-12 of 39