Overview | A Ceramic Filtration Primer | Manufacturing

Marathon Filters Testing History

DATE	DOCUMENTATION SOURCE	PATHOGENS	CHALLENGE CONCENTRATION	FILTRATION RESULTS
10/23/1995	University of Washington	Brevundimonas diminuta	1,000,000 organisms /ml	100% removal
3/1996	University of South Florida	Klebsiella terrigena Cryptosporidium	31,000,000/ml 31,000/ml	Zero growth 100% removal
11/26/1997	University of Arizona US EPA Guide Standard	Klebsiella terrigena Cryptosporidia cysts	27,400,000,000/L 8,290,000/L	Zero growth 100% removal
1/30/1998	United States Marine Corps. Quantico, Virginia (NSN 4610014495912)	Months of vigorous Tests during 1997	Tested 9 different brands of water filters for use of US Marine Corps.	* US Marine Corps. Selected MSR, Marathon Ceramics as the best one.
6/24/1998	Spectrum Labs, Inc. New Brighton, MN	Toxicological Extraction Evaluation	VOCs / EPA method number 502.2 scan	Meet requirements for compliance under NSF Number 42-1997
5/25/2000	Biovir Laboratories, Benicia, California	Klebsiella terrigena Cryptosporidium parvum	170,000,000/100ml 110,000/L	Zero growth 100% removal
7/12/2000	Mountain Safety Research, WA, USA	E.coli, Raw sewage water	5,800,000/ml	100% removal
3/11/2002	Cascade Designs (CDI) Testing Lab. Seattle, WA, USA	Klebsiella terrigena	4,200,000/ml	100% removal
4/2/2002	CDI Testing Lab Seattle, Washington	Klebsiella terrigena	9,400,000/ml	100% removal
5/15/2002	CDI Testing Lab Seattle, WA, USA	Klebsiella terrigena	4,000,000/ml	100% removal
7/2/2002	University of Washington	E.coli Heterotrophic bacteria	1,400,000/ml 67,400	Zero growth None detected

Marathon Ceramics selected as One of the Top Ceramic Innovations In The Last 100 Years by the American Ceramic Society, May 1998. *NSF Certified.(NSF 42-1997)