Monodispersed Silica Microsphere

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Monodispersed Silica Microsphere

Microsphere Composition: Silicon Dioxide (SiO2)
Crystal Structure: Amorphous
Form: Aqueous dispersion (or Powder)
Approximate Concentration (W/V): 5% solids
Sodium Azide Concentration: 50 ppm
Surfactant (W/V): <0.1%  or None

 

Physical Data:
Nominal Diameter(µm): any size between 1-30 um
Density: 1.9-2.3 g/cm3
Refractive Index: 1.40 to 1.46 @ 589 nm, 25℃


Monodispersed Silica Microsphere
Monodispersed Silica Microsphere
1-30um Silica Microsphere

Features and Applications:
1. High uniformity of particle size and perfect spherical shape;
2. Good acid and basic resistance;
3. Broad PH range for application;
4. Optimal pore structure;
5. Used as model systems in medicine, biochemistry, colloid chemistry, and aerosol research;
6. Used as particle standards as well as tracers in environmental science, flow visualization and measurements in gases and liquids like Laser Doppler Anemometry (LDA), Particle Dynamics Analysis (PDA), Particle Image Velocimetry (PIV), Digital Imaging Velocimetry (DIV) and Laser Speckle Velocimetry (LSV). High temperature resistance makes them especially well suited for studying flows at elevated temperatures.

 

Physical and Chemical Properties:
Hydrophilic surface, possess many silanol functional groups on the surface, which can be used for a covalent attachment of other ligands;Temperature resistance up to 1000℃; Monodispersed Silica Microsphere is stable in organic solvents; Soluble in strong bases and in hydrofluoric acid.

Storage and Handling:
Aqueous dispersions of silica particles have excellent stability. Storage at room temperature is possible without bacterial growth. Monodispersed Silica Microspheres particles can be washed with organic solvent, air dried and autoclaved. Dispersions of silica particles can be frozen.

  Silica microsphere
SepuSil microsphere Spacer microspheres