Non-Functionalized Polystyrene

polystyrene beads

We offer uniform polystyrene latex microspheres that may be used as-is for standards or markers, or coated with proteins via adsorption for use in diagnostic tests and assays. See TechNote 204, Adsorption to Microspheres. Our spheres are synthesized via emulsion polymerization, and are available in diameters from ~20nm-90µm, with typical size CVs of 5-10%. For applications that require highly stringent CVs (e.g. 2-5%), call for product availability. Most products are supplied as a 10% solids suspension (100mg/mL) in de-ionized water with surfactant and sodium azide.


Many proteins may be easily and stably absorbed to hydrophobic, non-functionalized microspheres. Divinylbenzene (DVB) confers additional solvent and heat resistance to our crosslinked spheres. Unless noted otherwise, PS and PS/DVB microspheres are available as ~10% solids (w/w) aqueous suspensions in these standard amounts: 0.5g, 1.0g, 1.5g, and 5.0g.

*Please note: If you are NOT ordering via website, please specify a lot number if multiple lots are available.
Catalog Number Nominal Diameter

Specification Range

Product Data Sheet
PS02001             0.025µm 0.015 - 0.035µm PDS 732.pdf
PS02002 0.050µm 0.040 - 0.060µm PDS 732.pdf
PS02003 0.075µm 0.065 - 0.085µm PDS 732.pdf
PS02004 0.100µm 0.090 - 0.110µm PDS 732.pdf
PS02005 0.125µm 0.115 - 0.135µm PDS 732.pdf
PS02006 0.150µm 0.140 - 0.160µm PDS 732.pdf
PS02007 0.175µm 0.165 - 0.185µm PDS 732.pdf
PS02008 0.200µm 0.190 - 0.210µm PDS 732.pdf
PS02009 0.300µm 0.270 - 0.330µm PDS 732.pdf
PS02010 0.400µm 0.370 - 0.430µm PDS 732.pdf
PS03001 0.500µm 0.470 - 0.530µm PDS 732.pdf
PS03002 0.600µm 0.570 - 0.630µm PDS 732.pdf
PS03003 0.700µm 0.670 - 0.730µm PDS 732.pdf
PS03004 0.800µm 0.770 - 0.830µm PDS 732.pdf
PS03005 0.900µm 0.870 - 0.930µm PDS 732.pdf
PS04001 1.00µm 0.95 - 1.05µm PDS 732.pdf
PS05001 2.00µm 1.80 - 2.20µm PDS 732.pdf
PS05002 3.00µm 2.80 - 3.20µm PDS 732.pdf
PS05003 4.00µm 3.80 - 4.20µm PDS 732.pdf
PS06001 5.00µm 4.80 - 5.20µm PDS 732.pdf
PS06002 5.50µm 5.30 - 5.70µm PDS 732.pdf
PS06003 6.00µm 5.80 - 6.20µm PDS 732.pdf
PS06004 7.00µm 6.80 - 7.20µm PDS 732.pdf
PS06005 7.50µm 7.30 - 7.70µm PDS 732.pdf
PS07001 10.00µm 9.50 - 10.50µm PDS 732.pdf
PS07002 15.00µm 14.50 - 15.50µm PDS 732.pdf
PS07003    20.00µm 19.00 - 21.00µm PDS 732.pdf
PS08001 >25.µm >25.00µm PDS 732.pdf


Joubert, M, Hokom, M, Eakin, C, Zhou, L, Deshpande, M, Baker,M, …Jawa, J (2012) Highly Aggregated Antibody Therapeutics Can Enhance the in Vitro Innate and Late-stage T-cell Immune Responses J Biol Chem 287:25266

Noyhouzer, T., Perry, S. C., Vicente-Luis, A., Hayes, P. L., & Mauzeroll, J. (2018). The Best of Both Worlds: Combining Ultramicroelectrode and Flow Cell Technologies. Journal of The Electrochemical Society, 165(2), H10-H15. (Cat. PS03005, 0.9µm PS nanoparticles)
Fernandez-Bravo A, Yao K, Barnard ES, Borys N, Levy E, Tian B, … Schuck JP. (2018) Continuous-wave upconverting nanoparticle microlasers.Nature Nanotech;06/18.1748-3395 (nanoparticle-coated 5µm PS beads)
Arifin, N, Yunus, M H, Nolan, TJ, Lok, JB, & Noordin, R. (2018). Identification and Preliminary Evaluation of a Novel Recombinant Protein for Serodiagnosis of Strongyloidiasis. (PS02002, 0.5µm PS microspheres to pre-adsorb serum samples for immunoscreening)
Choy C H, & Botelho RJ. (2017). Quantifying phagocytosis by immunofluorescence and microscopy. In Phagocytosis and Phagosomes (pp. 43-53). Humana Press, New York, NY.(PS05003, 3.87µm PS, IgG opsonized with fluorescent secondary Ab)