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Microspheres manufactured within a very narrow diameter distribution from the nominal value. These microspheres are typically made of ceramic, glass, or polymers; they are available in a wide range of nominal diameter sets. Device calibration/laboratory microspheres are appropriate to calibrate laboratory instruments, such as flow cytometers and electronic microscopes, they are also used in a variety of clinical laboratory applications (e.g., chromatography). Paramagnetic microspheres coated with specific nuclear antibodies are part of some separation cell immunoassays.
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