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Home / Accessories for Microscopy / TEM Supplies / Test Specimens

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Test Specimens

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    Combined TEM Test Specimen – Gold / Graphitized Carbon
    A holey carbon film is shadowed with gold and graphitized carbon particles are deposited.
    no. 638

    Description

    Combined TEM Test Specimen – Gold / Graphitized Carbon

    A holey carbon film is shadowed with gold and graphitized carbon particles are deposited.
    These particles viewed over the holes may be used for assessment of factors limiting the microscope performance.
    The evaporated gold forms small polycrystalline islands and within these islands lattice fringes can be resolved.

    This specimen is also used for contamination measurement rates in the electron microscope by noting the deposition rate of carbon within the holes found in the gold film.

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    Art.Description Unit PriceQuantity
    638

    Combined TEM Test Specimen on 3mm grid

    Each € 143,30
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    Brand: Ted Pella

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    Polystyrene Latex Spheres
    Polystyrene Latex Spheres - Certified Nanosphere Size Standards
    no. 610-03 to 610-38

    Description

    Polystyrene Latex Spheres

    Used as a magnification test specimen in TEM and SEM, but is also employed in particle counting devices as a size check and focus aid.

    Covers m to nm range.
    Offered in a 10ml size, at 0.1% weight by volume.
    Specific gravity is 1.05 g/ml.

    Sphere Size, Size Deviation, Sphere Density Table
    Prod. No.Nom Size ( m)Size Uniformity (C.V.)Approx. Spheres/cc
    610-030.03≤30%6.741 x 1013
    610-080.08≤18%3.55E x 1012
    610-100.09≤15%2.50 x 1012
    610-140.17≤5%3.70 x 1011
    610-170.26≤3%1.04 x 1011
    610-200.30≤3%6.74 x 1010
    610-300.49≤3%1.55 x 1010
    610-381.00≤3%1.82 x 109

    Note: actual size will appear on product label

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    Art.Description Unit PriceQuantity
    610-03

    Latex Spheres, 0.03 m, nom

    10ml € 23,30
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    610-08

    Latex Spheres, 0.08 m, nom

    10ml € 23,30
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    610-10

    Latex Spheres, 0.09 m, nom

    10ml € 23,30
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    610-14

    Latex Spheres, 0.17 m, nom

    10ml € 23,30
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    610-17

    Latex Spheres, 0.26 m, nom

    10ml € 23,30
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    610-20

    Latex Spheres, 0.30 m, nom

    10ml € 23,30
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    610-30

    Latex Spheres, 0.49 m, nom

    10ml € 23,30
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    610-38

    Latex Spheres, 1.00 m, nom

    10ml € 23,30
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    610-SET

    Latex Spheres, set of 3

    10ml € 62,40
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    Brand: Ted Pella

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    Diffraction Standard – Camera Length
    The nominal value of the effective camera length of an EM operating in the selected area mode is not sufficiently accurate for calculations of lattice spacing.
    no. 619

    Description

    Diffraction Standard – Camera Length

    Evaporated Aluminum

    The nominal value of the effective camera length of an EM operating in the selected area mode is not sufficiently accurate for calculations of lattice spacing.

    The actual value of camera length must be calibrated at the same accelerating voltage and objective lens setting by reference to a known substance with well defined diffraction spacings.
    A normal specimen is evaporated film of aluminum with a thickness of around 31nm.

    Very small crystallite size yields ring patterns suitable for calibration. The specimen is supplied with a list of the principal lattice spacings.

    Made on a G400, 400 square mesh copper Gilder grid.

    Technical Note

    Technical Note

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    Art.Description Unit PriceQuantity
    619

    Evaporated Aluminum on 3mm grid

    Each € 36,00
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    Image Rotation
    A molybdenum trioxide crystal is suitable for Image Rotation
    no. 625

    Description

    Image Rotation

    Molybdenum Trioxide

    When changing from a selected area image of a specimen to a diffraction pattern, the strength of the intermediate lens is changed, producing an image rotation between the image and the diffraction pattern.

    This rotation is seen by photographing a crystal whose shape gives a clear indication of orientation.

    A molybdenum trioxide crystal is suitable for this purpose.

    Supported on a G400, 400 square mesh copper Gilder grid.

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    Art.Description Unit PriceQuantity
    625

    Molybdenum Trioxide, on 3mm grid

    Each € 27,80
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    500nm Magnification Calibration Diffraction Grating Replica
    Carbon replica with Au/Pd shadowing on a cross line grating with well-defined trench type grooves.
    no. 677

    Description

    500nm Magnification Calibration Diffraction Grating Replica

    Carbon replica with Au/Pd shadowing on a cross line grating with well-defined trench type grooves.

    Pitch or “d” spacing for parallel line grating is 500nm.

    The trench type groove makes it easy to measure the pitch.

    Typically, cross line grating is used up to 100,000x with 2,000 lines/mm in both directions.
    Instructions included.

    Made on a G400, 400 square mesh copper grid.

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    Art.Description Unit PriceQuantity
    677

    500nm Grating Replica, Cross line grating, 2000 l/mm, on 3mm grid

    Each € 66,80
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    500nm Diffraction Grating Replica with Latex Spheres
    Two-in-one; this standard for calibration provides a double-check of the accuracy of magnification calibration.
    no. 673

    Description

    500nm Diffraction Grating Replica with Latex Spheres

    magnification calibration specimen

    Two-in-one; this standard for calibration provides a double-check of the accuracy of magnification calibration.
    It is particularly useful at higher magnification; up to 150,000x.

    The latex sphere size is 261nm and the carbon cross line grating replica with Au/Pd shadowing has a pitch or “d” spacing of 500nm or 2000 lines/mm.
    Replica has well-defined trench type grooves, which makes it easy to measure the 500nm pitch.

    Supplied on a G400, 400 square mesh copper grid.

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    Art.Description Unit PriceQuantity
    673

    500nm Diffraction Grating Replica with Latex Spheres, 2000 l/mm, on 3mm grid

    Each € 67,40
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    Magnification Calibration
    Carbon replicas with Au/Pd shadowing of diffraction line gratings, parallel line, waffle pattern gratings.
    no. 606 and 607

    Description

    Magnification Calibration
    Diffraction Grating Replicas

    Carbon replicas with Au/Pd shadowing of diffraction line gratings, parallel line, waffle pattern gratings.

    Made on a G400, 400 square mesh copper Gilder grid.

    Typically, parallel is used up to ~40-50,000x, while the waffle is used up to ~80-100,000x.
    Parallel line gratings are 2,160 lines/mm (54,864 lines/inch).

    The waffle is 2,160 lines/mm in both directions.
    Line or “d” spacing for parallel line grating is 462.9nm.
    Instructions included.

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    Art.Description Unit PriceQuantity
    606

    Grating Replica, Parallel, 2160 l/mm, on 3mm grid

    Each € 64,40
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    607

    Grating Replica, Waffle, 2160 l/mm, on 3mm grid

    Each € 77,80
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    Diffraction Grating Replica with Latex Spheres
    Two-in-one; this standard for calibration provides a double-check of the accuracy of magnification calibration.
    no. 603

    Description

    Diffraction Grating Replica with Latex Spheres

    magnification calibration specimen

    Two-in-one; this standard for calibration provides a double-check of the accuracy of magnification calibration.
    It is particularly useful at higher magnification.

    The latex sphere size is 0.261 m and the carbon grating replica with Au/Pd shadowing is 2160 lines/mm.

    Supplied on a G400, 400 square mesh copper Gilder grid.

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    Art.Description Unit PriceQuantity
    603

    Diffraction Grating Replica and Latex Calibration Standard

    Each € 73,20
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    Perforated carbon film, 3.05mm grid
    This specimen is one of the quickest and easiest to use for performance checks since it gives information about nearly all causes of loss of resolution.
    no. S100

    Description

    Perforated carbon film, 3.05mm grid

    This specimen is one of the quickest and easiest to use for performance checks since it gives information about nearly all causes of loss of resolution.
    The Agar Scientific perforated carbon films yield holes small enough to be imaged at an instrumental magnification of x200,000.

    If these holes are not present in a grid square they will be found in an adjacent square.
    The holes are round, with smooth unthickened edges. Perforated carbon films are thin films of carbon which have been treated to obtain a large number of small holes.

    The examination of the Fresnel fringe around a hole when the objective lens is slightly defocused enables the astigmatism to be corrected.
    The clarity of the fringe also gives information about the mechanical and electrical stabilities and available resolution of the instrument.
    When higher resolution equipment is used, the slightly underfocused image of the carbon film itself is used for astigmatism correction.

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    Art.Description Unit PriceQuantity
    S100

    Perforated carbon film, 3.05mm grid

    Each p.o.r.
    Brand: Agar

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    High resolution test specimen gold particles on carbon film
    An arrangement of finely dispersed thin gold particles has an advantage over single crystal gold foil for tests of high resolution imaging capabilities in TEM.
    no. S132

    Description

    High resolution test specimen gold particles on carbon film

    An arrangement of finely dispersed thin gold particles has an advantage over single crystal gold foil for tests of high resolution imaging capabilities in TEM.

    As with gold foil, image quality, magnification and instrumental stability are readily assessed, however, this gold particle specimen is superior for the determination of resolution capabilities since it offers a choice of crystalline orientations on static or low tilt stages.

    In addition, the thickness of the crystalline material is easily calculated from the projected shape of the gold crystal.
    The background noise arising from structure in the support film helps with determinations of the operating transfer function.

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    Art.Description Unit PriceQuantity
    S132

    High resolution test specimen gold particles on carbon film

    Each p.o.r.
    Brand: Agar

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    1507 DE Zaandam

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