Editing Caesium (section)

===Centrifugation fluids===
The high density of the caesium ion makes solutions of caesium chloride, caesium sulfate, and caesium [[trifluoroacetic acid|trifluoroacetate]] ({{chem|Cs(O|2|CCF|3|)}}) useful in molecular biology for density gradient [[differential centrifugation|ultracentrifugation]].<ref>Manfred Bick, Horst Prinz, "Cesium and Cesium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim. {{doi|10.1002/14356007.a06_153}}.</ref> This technology is used primarily in the isolation of [[virus|viral particles]], subcellular [[organelle]]s and fractions, and [[nucleic acid]]s from biological samples.<ref>{{cite book |chapter-url=https://books.google.com/books?id=1kn89nI2gUsC&pg=PA61 |pages=61–62 |isbn=978-0-89603-564-5 |chapter=Gradient Materials |editor=Desai, Mohamed A. |date=2000 |publisher=Humana Press |location=Totowa, N.J. |title=Downstream processing methods |access-date=8 May 2021 |archive-date=5 March 2024 |archive-url=https://web.archive.org/web/20240305133410/https://books.google.com/books?id=1kn89nI2gUsC&pg=PA61#v=onepage&q&f=false |url-status=live }}</ref>