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Q&A How do I test my water filter?

How can you verify that a water filter still works? I've had one for several years and I suspect it may not be working. Is there a way to test and make sure that it still filters to the factory s...

1 answer  ·  posted 8y ago by Russell Steen‭  ·  last activity 7y ago by System‭

Question gear backpacking water-purification