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Negatively stained catalase crystals show lattice plane spacings of approximately 8.75nm and 6.85nm very clearly (using TEM and STEM). (Figures determined by Wrigley. J. Ultrastructure Res. 24, 454. 1968). They are valuable for high magnification calibration. -
CD Calibration Specimen 0.5-10um GPTB Certified -
CD Calibration Specimen 0.5-10um Non Certified
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A silicon test specimen made of single crystal silicon of overall dimensions 5 x 5mm and is 0.5mm thick. -
Chessy test specimen -
Combined test specimen -
Composite Disc Adhesive Backed 203mm Dia.(Pack of 10) -
2160 lines/mm Shadow cast carbon replicas of diffraction line gratings, Cross Direction -
Cryolab Dewars with storage capacities from 2 to 50 litres, offering strength and durability within a lightweight high-efficiency package. -
Cryolab Dewars with storage capacities from 2 to 50 litres, offering strength and durability within a lightweight high-efficiency package.
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Cryolab Dewars with storage capacities from 2 to 50 litres, offering strength and durability within a lightweight high-efficiency package.
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Cryolab Dewars with storage capacities from 2 to 50 litres, offering strength and durability within a lightweight high-efficiency package.
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Cryolab Dewars with storage capacities from 2 to 50 litres, offering strength and durability within a lightweight high-efficiency package.
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Cryolab Dewars with storage capacities from 2 to 50 litres, offering strength and durability within a lightweight high-efficiency package.
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Diffraction grating replica with latex spheres -
Standard low profile blades for routine tissue samples. Supplied in a dispenser with 50 blades.
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