Our monodispersed bare silica particles (UniSil), are high-purity silica chromatographic media produced by NanoMicro using its own patented technology, for your analytical analysis and preparative chromatographic purifications of active pharmaceutical ingredients and other high-value substances. UniSil particles have uniformed particle size, perfect spherical shape, and excellent mechanical strength, enabling easy column packing, high column efficiency, and low back pressure.
Lower back pressure
Better bed stability
UniSil offers a standard series of bare silica for analytical and preparative applications in conventional 100Å, 120Å, 200Å, and 300Å pore sizes and in sub 2 µm to 50 µm particle sizes. Standard bare silica is available in bulk quantities between 50 grams and 100 kilograms.
We also offer bare UniSil particles with larger pore volume (>1.1 ml/g) for BioSEC purpose.
Besides monodispersed UniSil particles used for chromatography purpose, we also offer silica particles with 50 µm or larger sizes for SPE, oligonucleotide synthesis support, and other applications. For example, 50 µm silica particles with pore sizes of 500Å, 1000Å, and 1500Å have been used for oligonucleotide synthesis support.
For more information about BioSEC, SPE, oligonucleotide synthesis support, and other applications, please contact us.
Particle Size (μm)
Pore Size ( Å)
Particle Size CV
Surface Area (m2/g)
Pore Volume (cm3/g)
Bulk Density (g/mL)
Carbon Content (%)
Max. Pressure( bar)
Operational Temperature (℃)
We offer products with various particle size and pore size. For detailed ordering information, please contact local sales or leave a message on this website.
10g, 50g, 100g, 500g, 1Kg
100g, 500g, 1Kg, 5Kg, 10Kg, 20Kg