Sartorius Stedim Biotech has launched the Sartoguard NF prefilter series combining high performance polyethersulfone (PES) membranes and nanofleece technology. According to the company, the newly developed nanofleece technology provides an ultrafine fleece structure based on a small nanofiber diameter of 120-150 nm compared with the fiber diameter of conventional fleece materials of >500 nm, resulting in enhanced clarification capabilities.
 
Sartoguard NF prefilters are designed to offer cost-saving potential due to the ultrafine retention performance, which helps ensure removal of extremely small particulate-based contaminants. All active filter materials are made of polyethersulfone and enables users to implement Sartoguard NF into existing filtration processes utilizing final filters already based on PES, according to the company.
 
Sartoguard NF filter elements are available in all common filter formats, such as SartoScale devices for small-scale filterability trials, as well as MidiCaps, MaxiCaps and standard filter cartridges for medium- and commercial-scale manufacturing.