Project Description

EPRUI offers uniform polystyrene latex microspheres that may be used as-is for self arrangement of microspheres, filter membrane screening, fluid dynamics research, photonic crystal film formation, instrument calibration, particle size standard and chromatographic media or coated with proteins via adsorption for use in diagnostic tests and assays.

Our monodispers microspheres are synthesized via emulsion polymerization, and are available in diameters from 20nm-1000µm, with typical size CVs of 5%-10%. We can also supply monodisperse polystyrene microbeads for applications that require highly stringent CVs (e.g. 2-5%) such as size standard particles, instrument calibration, LCD spacers…

Microspheres with particle size below 3um are supplied as a 10% solids suspension (100mg/mL) in de-ionized water with surfactant and sodium azide. Microspheres with particle size larger than 3um are usually supplied in powder form but can also be supplied in dispersion form according to customers’ requirement.

non-fuctionalized PS-DVB

Nonporous PS and PS/DVB

Polystyrene BeadsParticle Size(um)MatrixC.V
1-001-0.10.1Polystyrene<3.5%
1-001-0.20.2Polystyrene<3.5%
1-001-0.30.3Polystyrene<3.5%
1-001-0.40.4Polystyrene<3.5%
1-001-0.50.5Polystyrene<3.5%
1-001-0.60.6Polystyrene<3.5%
1-001-0.70.7Polystyrene<3.5%
1-001-0.80.8Polystyrene<3.5%
1-001-0.90.9Polystyrene<3.5%
1-001-11Polystyrene<3.5%
Nonporous PS/DVB MicrospheresParticle Size(um)MatrixC.V
1-002-33PS/DVB<3.5%
1-002-55PS/DVB<3.5%
1-002-1010PS/DVB<3.5%
1-002-1515PS/DVB<3.5%
1-002-2020PS/DVB<3.5%
1-002-2525PS/DVB<3.5%
1-002-3030PS/DVB<3.5%
1-002-4040PS/DVB<3.5%
1-002-5050PS/DVB<3.5%