Ultracentrifugation Catalog

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Tubes and Bottles

Tubes and Bottles For Every Application N o single tube design or material will meet all application requirements. A number of factors should be considered at the time a supply of tubes is ordered: the particular technique to be used, the nature of the sample and any solvent or gradient media, the desirabil­ ity of reusing the tubes, and certain convenience factors. The properties listed below provide a guide for anyone involved in the tube selection process. • Chemical Resistance to a wide range of bases, acids, and solvents. • Transparency , to permit a clear view of fractions and bands after centrifugation. • Thin enough to be sliced or punctured after centrifugation for fraction collection. • Impermeable to Water , to prevent aqueous solutions from permeating the tube wall and reaching the rotor cavity. • Surface Properties that prevent the adherence of nucleic acids and proteins. • Temperature Tolerance throughout a wide range of operating temperatures, without deforming at high temperatures or cracking when used close to 0°C. • Autoclavable , for convenient sterilization and reuse. • Contaminant-free , to avoid leaching extraneous materials into the sample, especially materials visible in the sensitive 240-280 nm range. • Odor-free , for pleasant handling. The full line of Beckman Coulter tubes includes a number of tube materials, each with its own distinct combination of properties, to meet a variety of application requirements. Available are transparent, translucent, and opaque tubes, tubes that can be sliced or punctured, tubes that can be sterilized and reused, and tubes that are resistant to a variety of chemical compounds. • Strength and Flexibility , to resist permanent deformation even when run in fixed angle rotors without tube caps.

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Beckman Coulter Ultracentrifuge

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