Nanosep Centrifugal Device 30000 MWCO. Red. Polypropylene. OMEGA filter medium is modified polyethersulfone low protein-binding on polyethylene substrate. Nonsterile sanitizable. 0.28cm2 filtration area. 500uL sample volume. 15uL concentrate volume. 14000g force. For 1.5mL rotors. 500/pk.