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Crystals of bovine liver catalase are recommended as an internal standard of length in the electron microscope. Absolute sizes in the magnification range of 10,000 X to 150,000 X may be determined with an accuracy of +/- 2.5% and relative sizes with an accuracy of +/- 1.5%. Based on experimental data, the principal catalase lattice spacing is 172 +/- 4 Angstroms. Lattice lines separated by half this distance are used in actual size determinations. Crystals are suspended in antibacterial solution. Sealed in 10 ml glass vial. Learn More

A 1500 mesh, 0.00015" thick nickel screen is precisely mounted within a 3.0 mm copper athene-type, double grid. The double grid is firmly secured to provide a sturdy specimen to last indefinitely. The very accurate spacings may be used to check magnification. The fine wire projections aid in the measurement of field distortions. One bar and one space measures 16.94 µm. Learn More

If your instrument can resolve the tetrad of this protein molecule it has better than 12.5 Angstroms resolution. Supplied as a pure suspension dispersed upon a formvar substrate. Learn More

Used to hold crystals in the process of determining crystallographic orientation using either Laue back reflection or optical orientation techniques. For Low Speed Diamond Wheel Saw II - Model L660 and Wire Saw - Model L850 Learn More

Used to hold crystals in the process of determining crystallographic orientation using either Laue back reflection or optical orientation techniques. For Low Speed Diamond Wheel Saw II - Model L660 and Wire Saw - Model L850 Learn More

Designed specifically for wedge polishing of TEM specimens. the mount consists of a small aluminum clamping mechanism and 5 Pyrex rods which slide into the center of the clamp and are held in place when the L-bracket is tightened. Not included with the purchase of the BiPod Polisher. Learn More

Priced at $21.00 individually. Included at no charge with the purchase of the BiPod Polisher. Learn More

For holding sample securely in BiPod Polisher. Included at no charge with the purchase of the BiPod Polisher. Learn More

A high resolution test specimen consisting of a graphitized ISAF carbon black dispersed on "lacey" carbon film supported by a 200 mesh grid. The carbon black chains bridge openings in the film so there is no substrate to interfere with resolution tests. Imaging of the 3.4 Angstrom lattice spacing of the carbon, along with the curved regions and dislocations, permit magnification calibration and check the performance of high resolution electron microscopes. Learn More