Katadyn Pocket Microfilter
"The most rugged, highest capacity microfilter available. Lifetime warranty. Exclusive silver impregnated ceramic element lasts up to 13,000 gal. Microfiltration method: field-cleanable 0.2 micron ceramic depth filter. Output: up to 1 qt/minute. Weight: 20 oz. Height: 10"". Includes: Prefilter, bottle clip, carry bag, measuring gauge and cleaning pad. "