The silica partilces offered by Spherotech are non-porous, spherical in shape, and are very uniform in size. These particles have a density of 1.96 g/cm3 and can withstand temperatures of up to 1000 C. They have been used to adsorb DNA and RNA from cell lysates.

SPHERO^TM Silica Particles
SIP-05-10 ; Silica Particles, 5% w/v, 0.4-0.6 µm, 10 mL, $100.00

SIP-10-10 ; Silica Particles, 5% w/v, 1.0-1.4 µm, 10 mL, $110.00

SIP-15-10 ; Silica Particles, 5% w/v, 1.5-1.9 µm, 10 mL, $120.00