Estapor® Bio-Estapor Microspheres

These standard polystyrene microspheres are extremely uniform with excellent lot-to-lot reproducibility. They are mainly devoted to hydrophobic or passive immobilization of molecules (polyclonal or monoclonal antibodies, proteins, haptens, etc.) onto their surface. We offer a large range of sizes (from 15 nanometers to 6 microns and more), making this range suitable for most microspheres-based technologies.

Dyed microspheres are extremely uniform and are dyed internally (their surface properties are unchanged), insuring maximum color brilliance and preventing dye leaching in water or aqueous buffers.

These photostable fluorescent microspheres have been specifically developed and patented by Estapor®. Made in polystyrene (PS) or in polyvinyltoluene (PVT), our fluorescent microspheres are monodisperse and uniform, ranging in size from 20 nm to 4 μm. Our fluorescent products are also available as plain or functionalized microspheres. To prevent dyes leaching and to provide the maximum of active surface, the fluorescent dyes are physically and irreversibly entrapped inside the microspheres.

The use of magnetic microspheres is a well established alternative to conventional chromatography resins in automated high throughput protocols replacing centrifugation, organic solvents and filtration by simple and rapid magnetic separation. Our product portfolio of superparamagnetic microspheres is very large in terms of size, surface and ferrite content. These magnetic microspheres have the appearance of a dark brown liquid.