Thank you for your support of small businesses like Highwater . Microporous Ceramic retains suspended solids and traps safely all harmful bacteria and parasites like Cryptosporidium and Giardia. The silver-impregnated Ceramic works against bacteria growth. Silver Quartz inside the element controls any possible recontamination through the tab outlet. Katadyn Ceramic provides fresh and natural tasting drinking water without using chemicals. Due to manufacturer's guidelines for U.S. retailers, we cannot ship Katadyn products outside of the United States, unless it is to an A.P.O address. Technical Specs Capacity (gal) ~ 26'000 Capacity (L) ~ 100'000 Dimensions (cm) 29.3 x 5.5 Dimensions (in) 11.5 x 2.2 Technology 0.2 micron ceramic depth filter (cleanable) Weight (grams) 660 Weight (oz) 23.28