Thermo Fisher Scientific Sulfate Latex Beads, 8% w/v, 1.4 μm

Invitrogen™ Sulfate Latex Beads, 8% w/v, 1.4 μm

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However, they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating.

Sulfate latex is suitable for calibration of particle size analysis equipment and is also appropriate for use in diagnostic test systems that rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities

• 25 sizes available (0.02 μm to 16 μm)
• 20 different surface chemistries for versatile conjugation
• Surfactant-free and ultraclean
• Available in various quantities (from milliliter to 500-liter scale)

Key Applications of Microspheres

• Instrument calibration (flow cytometry, microscopy, HTS, HCS)
• Flow testing (microfluidics, blood flow, water flow, air flow)
• Cell biology tracers (cell differentiation and cell tracing)
• Immunoassays (agglutination tests, ELISA, particle capture, contrast reagents)

Custom Microsphere Service

If you don’t see the microsphere you’re looking for in the stocked list, Thermo Fisher Scientific offers custom microsphere production and conjugation services. All custom products are manufactured under ISO 13485:2000 certification, ensuring high quality and confidentiality.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

제품 사양