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Steri-Pens (UV Light Water Purification) - 3 types « SurvivalSchool.com- Midwest Native Skills Institute
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Amazon.com: Portable Water Filter, Greeshow Electric Water Purifier Survival with Backwash Function, 0.01 Micron 5-Stage Water Filtration System for Hiking Camping Backpacking Outdoor Emergency Preparedness : Sports & Outdoors
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Amazon.com : SteriPen Adventurer Opti UV Personal Water Purifier for Camping, Backpacking, Emergency Preparedness and Travel Black/Green Small : Sports & Outdoors
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