Superior Flow Rates and Higher Throughputs-75 Metals Analysis Certification is printed on each package.-Meets filtration requirements of the U.S. EPA. -Available in a variety of pore sizes to meet regional regulatory requirements.-Save time and money. Self-contained devices reduce the need for costly decontamination and multiple filter change steps associated with reusable filter holders.-Ensures rapid filtration. GWV provides five times the filtration area of conventional 142 mm filters. This product is not approved for use in medical, clinical, surgical or other patient applications.