Fluorescent Microspheres - Fluorescent Micro & Nanospheres - By Products Type
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Fluorescent Microspheres

Ocean NanoTech's carboxylated fluorescent microspheres are polystyrene based microspheres with monodispersed size ranging from 0.3 µm to 0.5 µm. The photostable fluorescent dye (europium chelate) is physically encapsulated in the microspheres, which prevents dye leaching. These fluorescent microspheres have a high density of carboxylic acid functionalized surface for targed protein or ligands immobilization. Fluorescent microspheres are a critical material for the application of IVD and life sciences.


  • Specific design for timed-result lateral flow immunoassay
  • Quantitative lateral flow assays
  • Multiplexing assays
  • Membrane-based technologies
  • Flow cytometry
  • Toxicology


  • Excitation peak at both 365 nm and 420 nm
  • Large Stokes shift (195 nm)
  • Extreme long lifetime (600 µs)
  • High brightness
  • High photostability
  • No dye leaching
  • Monodispersed
  • Custom particle synthesis
  • 1% solid concentration