Katadyn Repl Element- Expedition. 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 outlet tap. Katadyn Ceramic provides fresh and natural tasting drinking water without using chemicals. Specifications for Katadyn Repl Element- Expedition: Manufacturer: Katadyn Packed Size: 11.5 x 2.2 in / 29.3 x 5.5 cm Fabric/Material: Ceramic Weight: 1.43 lb Cartridge Life: 26000g / 100000L Flow Rate: 1 Gallon per min Package Contents: Katadyn Repl Element- Expedition