The graded density matrix of Polygard-CT cartridge filters from Bedford, Mass.-based Millipore Corp., allows media with two distinct nominal pore size cutoffs to be wrapped into one cartridge. This technique maximizes dirt-holding capacity while affording extremely low differential pressures and offering a long service life. The filters are manufactured from melt-blown 100 percent virgin polypropylene to provide wide chemical compatibility.
80 Ashby Rd. Bedford Massachusetts 01730 US