page_title: Svedberg
hierarchical_section_title: Svedberg
caption_attribution_description: English: Beckman-Coulter ultracentrifuge, XL-100K
context_page_description: A Svedberg unit is a non-SI metric unit for sedimentation coefficients. The Svedberg unit offers a measure of a particle's size based on its sedimentation rate under acceleration. The Svedberg is a measure of time, defined as exactly 10⁻¹³ seconds.
  For biological molecules, the sedimentation rate is typically measured as the rate of travel in a centrifuge tube subjected to high g-force.
  The Svedberg is distinct from the SI unit sievert or the non-SI unit sverdrup, which also uses the symbol Sv.
context_section_description: A Svedberg unit (symbol S, sometimes Sv) is a non-SI metric unit for sedimentation coefficients. The Svedberg unit offers a measure of a particle's size based on its sedimentation rate under acceleration (i.e. how fast a particle of given size and shape settles to the bottom of a solution). The Svedberg is a measure of time, defined as exactly 10⁻¹³ seconds (100 fs).
  For biological molecules, the sedimentation rate is typically measured as the rate of travel in a centrifuge tube subjected to high g-force. 
  The Svedberg (S) is distinct from the SI unit sievert or the non-SI unit sverdrup, which also uses the symbol Sv.
caption: A laboratory ultracentrifuge.
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