The Katadyn® Ceradyn Drip Water Microfilter is a free-standing, no-pump gravity filter with 3 ceramic filters. Comes with attachable 2.5 gallon water container. Let gravity do the work! With the Katadyn® Ceradyn and drip filter, no hookup is required. This Drip filter is used by international relief organizations as group equipment for preparing water. It is also ideal for use while hunting, fishing, at the cabins and in a stabilized emergency situation.