This test specimen is for the correction of astigmatism in the
electron microscope. Carbon coated for good contrast and for easy observation of the Fresnel fringes. Good size holes even at high magnifications.
Carbon line grating replica mounted on 200 mesh copper grids. Parallel lines: 64,800 Lines per inch
Carbon line grating replica mounted on 200 mesh
copper grids. Parallel lines: 64,800 Lines per inch
This calibration standard provides a grating replica of
2160 lines/mm abd latex spheres of 0.261 µm size. This standard is particularly useful at higher magnifications.
Bovine liver catalase crystals are negatively stained, and supported on a carbon coated thin film on 200 mesh copper grids. Lattice spacing is 8,75nm
A single crystal of gold on a carbon support film orientated
to display lattice spacing of 0.102 nm, 0.143 nm and
The ferritin is spread on a carbon film supported by a 400 mesh grid. Resolution of the tetrad of the molecule indicates and instrumental resolution of better
Crocidolite crystals with lattice spacing of 0.9 nm and 0.45 nm for magnification standards testing microscopic stability.
Graphitized carbon black, being stable and highly reproducible, is a standard resolution test, shows spacing of 0.34 nm, mounted on a 3.05mm grid.
An evaporated film of aluminum gives an electron diffraction pattern of sharp rings characteristic of a f.c.c. structure a=4.0415A. Used for d spacing determination
Aluminum standard is on a 3.05mm grid.
Evaporated platinum/iridium on holey grid provide a good point to point standard for high-resolution electron
microscopes. Specimen mounted on 3.05mm grid.
Single crystal of MoO3 supported on a carbon film. The electron diffraction pattern from a selected single crystal may be used to calibrate the rotation between image and diffraction pattern. Mounted on a 3.05mm grid.
An evaporated film of thallous chloride gives and electron diffraction pattern consisting of sharp rings characteristic of a simple cubic structure: used for “d” spacing determination.
Mounted on 3.05 mm grid.
This standard is highly beam sensitive, but very useful for calibration at high magnification. On 3.05 mm grid.
Gold shadowed latex particles. Very fine gold particles at edges are excellent for resolution test. Specimen on 3.05mm grid.
Consists of 0.22 µm diameter latex particles, shadowed with Pt/Pd (80:20), provide dense markers.
The Ultrastructure size calculator gives direct readings of actual sizes represented by each millimeter measured on a micrograph at any magnification. The magnification being used is set in one window opposite an arrow and the readings are revealed in an adjacent window. Readings are given in microns, nanometer and Angstrom units.
Provides a rapid and precise method of drawing scale marks on light and electron micrographs at any magnification. It can be used directly for scale marks of: 10µm, 1µm,0.1µm. By marking a simple calculation it can also be used for any other size of scale mark.
Printed in English, French and German.