Porous Glass Beads

Substrate for cell cultivation Pure Borosilicate Glass 3.3 ROBU has developed a new carrier substrate for cell cultivation from the proven family of VitraPOR® sintered filter products. Pure, binder-free USP-class I borosilicate glass 3.3 is manufactured by our proprietary process to form 1.5 mm, 4 mm or 8mm diameter beads with defined pore sizes of approximately 60 micrometers. The special process uses no corrosives and produces a porous structure with smooth, yet large surface areas. The glass is completely bio-compatible and its high electrical surface charge (Zeta-Potential) helps to stimulate cell growth. As a result, you can yield more than 70% viable cells from your cultivation process - far superior to conventional PMMA and PVC carriers.