microParticles GmbH, Volmerstr. 9A, UTZ, Geb.3.5.1, D-12489 Berlin, Tel.: +49 30-6392 2565 Fax: +49 30-6392 2555
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New nanometer scale superparamagnetic polymer particles

New nanometer scale superparamagnetic polymer particles

PS-MAG-400nm-klein
Particle size distribution of PS-MAG-S1702 (400 nm, CV ≤5 %) as determined by Differential Sedimentation (CPS disc centrifuge).

New nanometer scale superparamagnetic polymer particles

Within a BMWi-sponsored R&D project, microParticles GmbH now succeeded in developing monodisperse superparamagnetic polystyrene particles (PS-MAG) with 400 and 600 nm in diameter. The particles are of spherical shape and have C.V. values ≤5 %. Thus, they distinctively differ from competing products currently available in the market. Due to their high iron oxide contents of approx. 50 wt.-%, the particles show an excellent superparamagnetic behavior. Our magnetic beads are available as plain, non-functionalized species as well as with COOH-modified surfaces. The COOH-surface functionalities are suitable for the coupling of proteins or other NH2-containing molecules. Hence, also streptavidin-modified particles (PS-MAG-SA) do belong to our product portfolio. The binding capacity with this type of beads is in the range of 3000 – 4000 pmol FITC-biotin per mg. In the near future microParticles GmbH will be able to offer its customers also monodisperse nominal 200 nm and 300 nm superparamagnetic PS particles.

microParticles GmbH, Volmerstr. 9A, UTZ, Geb.3.5.1, D-12489 Berlin, Tel.: +49 30-6392 2565 Fax: +49 30-6392 2555

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