KX Technologies ( Industries) 9.75" x 2.5" Matrikx + CTO/2 Carbon Filter 20-250-190-975 0.2 ﾵm Nominal Filtration 99.9996% E. coli Reduction NSF Standard 53 Cyst Reduction including Cryptosporidium & Giardia NSF Standard 42 Chlorine, Taste & Odor Reduction Cost-efficient, combining the performance of a "ceramic candle" and activated carbon into one filter Cleans with "just the wipe of a sponge" 2 models fitting most standard housings The "all-carbon" CERAMIKX™ filter combines the fine particulate reduction of a traditional ceramic filter with the chlorine, taste and odor reduction of activated carbon. With 99.9996% reduction of E. coli, the 0.5ﾵm CERAMIKX filter meets NSF Standard 53 Class 1 criteria for particulate removal and turbidity reduction, and the control of cysts, including Cryptosporidium and Giardia. CERAMIKX filters also meet NSF Standard 42 for Class 1 Chlorine @ 95% reduction of free chlorine.