About: Microbead (research)

Microbeads, also called Ugelstad particles after the Norwegian chemist, professor Dr. John Ugelstad, who invented them in 1977 and patented the method in 1978, are uniform polymer particles, typically 0.5 to 500 micrometres in diameter. Bio-reactive molecules can be absorbed or coupled to their surface, and used to separate biological materials such as cells, proteins, or nucleic acids.