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purification of water

  1. Food and water
    So, everyone knows about Royal Berkey and Katadyn, but I have question about just how capable the kinds of purifiers you can pick up in the local supermarket really are. I imagine they are less capable, but I don't actually know. For example, could a Brita Ultramax be used to make stagnant pond...
  2. Disaster Preparedness General Discussion
    How many drops of bleach should I add to a 2 ltr bottle of pond water to make it drinkable?
  3. Vendor Deals
    We just updated our system with a coupon code generator and want to give it a whirl... For any purchase over $209, which includes the Berkey Light and the Big Berkey Purifiers, we will immediately send you a coupon for $27.00 off your next order (minimum $27.00 order, made within 45 days of...
  4. Nuclear, Biological and Chemical (NBC) Survival
    im sorry if this has been posted somewere but i cant find it. does anyone know the answer to any of these? 1. what is the radation level just after a nuclear strike? ets say at point of impact with the average nuke then. 2. what is the half life of the radioactive material used in modern nukes...
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