Katadyn Gravidyn Element
"Similar to the Ceradyn, includes activated carbon to help with taste, odor, and some chemical reduction in the water. Filter has 6 month lifespan after initial use. Microfiltration method: field-cleanable 0.2 micron ceramic depth filter with granular activated carbon. Output: approx. 1 gal./hour. Ceramic capacity: up to 39,000 gal. Weight: 6.9 lbs. Height: 18"". Includes: 3 cleanable filter elements, measuring gauges and cleaning pad. "