The 0.3 µm Carboxyl Polystyrene Microspheres (1.0 g) are uniform, monodisperse latex nanoparticles functionalized with carboxyl groups (-COOH) on the surface, enabling covalent coupling of biomolecules such as proteins, peptides, and antibodies through EDC/NHS chemistry.
These carboxyl-modified polystyrene beads offer excellent size uniformity, low background fluorescence, and high chemical stability, making them ideal for bioconjugation, immunodiagnostic assay development, and nanoparticle calibration.
Their 0.3 µm (300 nm) size provides an optimal balance between surface area and light scattering properties, suitable for fluorescent labeling, lateral flow assays (LFAs), and quantitative particle tracking studies.
