Inorganic supports such as silica microspheres have become increasingly important for a variety of applications. They offer the combined benefits of working with a bead platform and the unique properties of a silica substrate, including: flexibility, large specific surface area, improved binding kinetics over planar surfaces, robust statistics, flexible silanization chemistries, unique refractive index and density, low autofluorescence, low nonspecific binding of many biomolecules, hydrophilicity, and easy manipulation.

Bangs offers a range of silica bead sizes (from ~0.15µm-5µm) to meet the requirements of a variety of applications.

Non-Fuctionalized Silica

SiO2 with natural hydroxyl or silanol (SiOH) surface groups for adsorption of nucleotides with low protein binding. Non-functionalized silica microspheres are available in these standard amounts: 0.5g, 1.0g, 1.5g, and 5.0g.

Silica in aqueous suspension

Catalog Number Nominal Diameter Specification Range Product Data Sheet Safety Data Sheet
SS02000 0.15µm 0.120 - 0.180µm PDS 702.pdf SDS SG140.pdf
SS02001 0.30µm 0.260 - 0.340µm PDS 702.pdf SDS SG140.pdf
SS02002 0.40µm 0.360 - 0.440µm PDS 702.pdf SDS SG140.pdf
SS03000 0.50µm 0.460 - 0.540µm PDS 702.pdf SDS SG140.pdf
SS03001 0.70µm 0.660 - 0.740µm PDS 702.pdf SDS SG140.pdf
SS03002 0.90µm 0.860 - 0.940µm PDS 702.pdf SDS SG140.pdf
SS04000 1.0µm 0.95 - 1.05µm PDS 702.pdf SDS SG140.pdf
SS04001 1.50µm 1.40 - 1.60µm PDS 702.pdf SDS SG140.pdf
SS04002 2.0µm 1.80 - 2.20µm PDS 702.pdf SDS SG140.pdf
SS05000 2.50µm 2.30 - 2.70µm PDS 702.pdf SDS SG140.pdf
SS05001 3.0µm 2.80 - 3.20µm PDS 702.pdf SDS SG140.pdf
SS05002 4.0µm 3.8 - 4.20µm PDS 702.pdf SDS SG140.pdf
SS05003 5.0µm 4.80 - 5.20µm PDS 702.pdf SDS SG140.pdf
SS06000 >5.0µm >5.0µm PDS 702.pdf SDS SG140.pdf

Dry Silica 

Catalog Number Nominal Diameter Specification Range Product Data Sheet Safety Data Sheet
SSD2001 0.30µm 0.260 - 0.340µm PDS 702.pdf SDS SG141.pdf
SSD3000 0.50µm 0.460 - 0.540µm PDS 702.pdf SDS SG141.pdf
SSD4000 1.0µm 0.95 - 1.05µm PDS 702.pdf SDS SG141.pdf
SSD4001 1.50µm 1.40 - 1.60µm PDS 702.pdf SDS SG141.pdf
SSD5000 2.50µm 2.30 - 2.70µm PDS 702.pdf SDS SG141.pdf
SSD5001 3.0µm 2.80 - 3.20µm PDS 702.pdf SDS SG141.pdf
SSD5002 4.0µm 3.80 - 4.20µm PDS 702.pdf SDS SG141.pdf
SSD5003 5.0µm 4.80 - 5.20µm PDS 702.pdf SDS SG141.pdf

Carboxyl Silica

SiO2 with carboxyl (COOH) surface groups for the covalent attachment of biomolecules. Carboxyl silica microspheres are sold in 1.0g amounts. Supplied dry, they are available in these nominal mean diameters: ~0.5µm, ~1.0µm, ~2.0µm, and ~5.0µm.

Catalog Number Nominal Diameter Specification Range Product Data Sheet Safety Data Sheet
SC03000 0.5µm

0.46 - 0.54µm

PDS 702.pdf SDS SG141.pdf
SC04000 1.0µm 0.95 - 1.05µm PDS 702.pdf SDS SG141.pdf
SC05000 2.0µm 2.80 - 2.20µm PDS 702.pdf SDS SG141.pdf
SC05001 5.0µm 4.80 - 5.20µm PDS 702.pdf SDS SG141.pdf

Amine Silica

SiO2 with amine (NH2) surface groups for the covalent attachment of biomolecules. Amine silica microspheres are sold in 1.0g amounts. Supplied dry, they are available in these nominal mean diameters: ~0.5µm, ~1.0µm, and ~5.0µm.

Catalog Number Nominal Diameter Specification Range Product Data Sheet Safety Data Sheet
SA03000 0.5µm 0.460 - 0.540µm PDS 702.pdf SDS SG141.pdf
SA04000 1.0µm 0.95 - 1.05µm PDS 702.pdf SDS SG141.pdf
SA05000 5.0µm 4.80 - 5.20µm PDS 702.pdf SDS SG141.pdf

Streptavidin-Coated Silica

SiO2 with a streptavidin-coated surface for the attachment of biomolecules. Silica streptavidin microspheres are sold in these standard volumes: 1mL, 2mL, 5mL, and 10mL. Available at 1% solids, in these nominal mean diameters: ~0.5µm, ~1.0µm, and ~5.0µm.

Catalog Number Nominal Diameter Specification Range Product Data Sheet Safety Data Sheet
CS01000 0.5µm 0.460 - 0.540µm PDS 702.pdf SDS SG142.pdf
CS01001 1.0µm 0.95 - 1.05µm PDS 702.pdf SDS SG142.pdf
CS01002 5.00µm 4.80 - 5.20µm PDS 702.pdf SDS SG142.pdf

Silica Bind-IT™

Silica Bind-IT™ are pure SiO2 microspheres with a pre-activated surface that allows ready binding of antibody without sacrificing stability. Silica Bind-IT™ microspheres are sold in these standard volumes: 2mL, 5mL, and 10mL. Available at 2.5% solids, in two nominal mean diameters: ~1.0µm and ~5.0µm.

Catalog Number Diameter Specification Range Product Data Sheet Safety Data Sheet
SB04000 1µm 0.95 - 1.05µm PDS 737.pdf SDS SG143.pdf
SB06000 5µm 4.80 - 5.20µm PDS 737.pdf SDS SG143.pdf