High recovery Ultracel regenerated cellulose membrane in a range of molecular weight cut-offs High retentate recovery of >90%, Vertical membrane reduces concentration polarization for ultra-fast spin times (as fast as 10–15 minutes) Heat-sealed membrane minimizes downstream extractables 100%, integrity tested for reliable performance Convenient sample monitoring with translucent housing and volume gradations Direct pipettor sample access eliminates processing step to recover concentrate High concentration factors of 80–100XMeer tonenMinder tonen