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Plain and Surface-Modified Polystyrene NIST Carboxylated PS Aminated PS
Color Latex Beads Red Polystyrene Blue Polystyrene Red Carboxylated Blue Carboxylated
Magnetic Polystyrene Magnetic Carboxylated Magnetic
Fluorescent FLUOR Polystyrene FLUOR Aminated FLUOR Carboxylated
Surfactant Free Surfactant Free Carboxylated Surfactant Free
Specialty PMMA DVB Non-spherical

 

Applications

Our products are frequently used for the following applications (not limited to what is listed below):

Slide Agglutination Assays (latex agglutination tests):

  • Suggested Latex: 0.2µm to 0.9µm in diameter
  • For hydrophobic binding, choose polystyrene latex
  • For covalent binding, choose carboxylated or aminated latex
  • Ultra-clean or surfactant-free latex
  • Lightly-dyed green, pink, blue latex, or another color of your chose (custom synthesis)

Membrane Migration (Lateral Flow Immunoassays (Rapid Tests):

  • Suggested Latex: 0.1µm to 0.5µm diameter
  • Intensely-dyed blue, red or black latex particles, plain PS or carboxylated PS
  • (Multiple-ligands assays is possible with rain-colored particles as antibody carriers)

Particle Enhanced Turbidimetric (or Nephelometric) Immunoassays (TIA):

  • Suggested Lates: 0.02µm to 0.2µm diameter, low surfactant PS or surface modified particles

High-Performance Liquid Chromatography (HPLC) Column Packing:

  • Suggested particles: PS Latex particles
  • Monosized PS Latex Particles with C.V.of 1.8% to 5%

Particle Size Measurement Calibration:

  • Size Measurements Certificated are Traceable to primary NIST standards: SRM1960, SRM1690, and SRM1601. Wide range of size standards are available. 

NIST Traceable Size Standard

Magnetic Cell Isolation or Protein Purification:

  • Positive or negative magnetic cell selection, magnetic bead enzyme linked immunosorbent ELISA assays

Liquid Crystal Display (LCD) Spacer:

  • Suggested Particles: 2µm or 7µm in diameter
  • Monosized PS/50% DVB compact microspheres of 5µm or 7µm in diameter

Fluorescent Cell Tracking:

  • Fluorescent nanoparticles/microspheres for stem cell labeling and tracking. We recommend our intensely dyed fluorescent particles; available in 5 colors from 30nm to 15µm.
  • For dying neurocell in chicken embryo, use yellow-green tracing fluorescent nanoparticles; 50nm or 100nm.
  • Can be used for visualization of colloid transport and retention in porous media.
  • Can be used for Fluorescent PIV (Particle Imaging Velocimetry)

Non-Spherical Particles:

  • Colloidal behavior of anisotropic particles (Non-Spherical Particles) provide an unique structure from their isotropic analogues spherical microspheres.
  • Counting particles by means of Opto-Acoustics behavior spherical and peanut shaped particles.
  • Asymmetric dimer based colloid crystals studies. Recommended product: PNT003UM.

Optical Chromatography:

  • Enhanced optical chromatography in microfludic system. Model PS Microspheres (refractive index n=1.59) verse model PMMA Microspheres (n=1.49) of the same diameter.
  • Recommended products for this application: PS002UM, PM002UM

Filtration and Membrane Study:

  • Porous media filtration studies using model spherical and non-spherical microspheres. Recommended Products: PS002UM, PNT002UM
  • Investigation of the entropic interactions between lamellar membranes and spherical colloid. Recommended product: PS800NM

Electrical Sorting:

  • Microfludial electrical sorting based on shape. Recommended Products: PS005UM, PNT005UM