Molecules can separate by size, using agarose, Sephadex, or Biogel beads {gel filtration}. Beads have surface depressions. Same-size or smaller-size molecules stay in depressions and slow, but larger molecules flow past and so exit faster.
Physical Sciences>Chemistry>Analytical Chemistry>Filtration
5-Chemistry-Analytical Chemistry-Filtration
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Date Modified: 2022.0224