The nonwoven polypropylene prefilters (with nominally-rated pore sizes) are constructed with 100% polypropylene, and exhibit similarly low extractables and broad chemical compatibility. Although technically hydrophobic, the polypropylene prefilters are easily water wetted at modest differential pressures.The filters can tolerate pH from 1 to 14 and have excellent compatibility with acids and bases. They are ideally suited for clarification, and prefiltration ahead of membrane filters, of water, aqueous solutions, and compatible solvents. They are also commonly used for large particle analyses. Their meltblown multilayer calendered construction and resulting gradient density maximize dirt holding capacity while improving resistance to surface blinding. Polypropylene membrane filters and prefilters can be safely disposed of by incineration. Unlike PTFE and PVDF filters, the polypropylene filters will not release harmful fluorine compounds.
Product Application:
ApplicationsPolypropylene Nominal Prefilters Composed of polypropylene fibers with nominal pore size rating Recommended for prefiltering aqueous, acid, and solvent solutions