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Amazon.com : Katadyn Pocket Water Filter, Long Lasting for Personal or Small Group Camping, Backpacking or Emergency Preparedness : Camping Water Filters : Sports & Outdoors
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Amazon.com: TRK Drip Ceradyn Gravity Personal or Group Water Filter, Long-Lasting Up to 150,000L, Cleanable 0.2 Micron Ceramic Elements for RV, Cabins, Base Camps and Emergency Preparedness : Automotive
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Amazon.com : Katadyn Vario Water Filter, Dual Technology Microfilter for Personal or Small Group Camping, Backpacking or Emergency Preparedness : Camping Water Filters : Sports & Outdoors
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