Mag-COOH and Mag-OH are special ferrimagnetic, silica beads,developed for use in microfluidic and chip-based genomic setups. Intended for nucleic acid isolation from various sources(blood,cells,bacteria etc.) for manual and automated work-flow. Under specific conditions, the carboxylated or hydrolyzed beads surface enables higher yield and purity from samples. Ferrimagnetic core with silica shell Small bead diameter, providing a large active silica surface High yields and good nucleic acids quality Instant collection of ferrimagnetice beads even in a weak magnetic field Low magnetic remanance allowing easy resuspension