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The key is to always have a trash bag. Your most reliable backwoods method for clean water is condensation, either through natural action, or via a still of some kind. The primary component of this is having large enough suitable material to make said still. If you are depending on natural action, then surface area is still key. Assuming you left your ...

nope yep (actually, yellow, not purple, thanks Clare) Not in my experience, but I use clarifiers which remove the flavor in the water. Also to clarify from comments, we did this for years before we started carrying a filter and it never damaged our containers. The plastic probably gets more damage from the sunlight caught during hiking than from the ...

Boiling eliminates only a certain class of contaminants that can make you ill. Specifically living bacteria and other microorganisms (protozoa, amoeba). It does not purify, or decontaminate the water completely. Certain bacterial and algal toxins can survive boiling and make you sick, and as Russell pointed out, there are also inorganic contaminants that ...

Once you open it up to toxins, the answer is clearly no, boiling is not enough. There are many examples: Alkali Salt Heavy Metals Blue-green algal toxins, which appear to be present in your photo If you are trying to clear up truly noxious water, try this method: http://outdoors.stackexchange.com/a/351/127

As I understand the technology, your microfilters will not expire on the shelf if maintained and stored properly. Their lifetime is determined by the number of gallons pumped. What can happen is if you don't properly dry out your filter before storing then it will develop mold. In that situation you can decide if it is best to clean the filter or replace ...

THE official information can be found on the CDC webpage. The CDC defines the problem in terms of what you're trying to kill: Protozoa, Bacteria, or Viruses. They address each of those in terms of water treatment methods: Boiling, Filtering, Chemical Disinfection, (or now-a-days UV Treatment). Please read what they have to say before you head into the ...

There are two common chemical options to water purification; chlorine and iodine. Both forms use some kind of expiration date. The consensed quantity of the chemical slowly degrades. Some things like sunlight cause the degradation process to speed up, so these are usually packaged in foil (as in your case) or brown glass bottles. Different recipes and forms ...

You might want to take a look at this site which is in Canada, but ships to the USA. Due note that since the DEA is restricting/banning the product, buying iodine crystals through the mail might get seized coming into the country. If you want to help Polar Pure come back, take a look here for info on how you can help. If you are looking for a more bulk ...

If you still have your PolarPur bottle you can purchase crystal iodine off of ebay. Look for this seller, "ibmsuccess2010", he sells and ships from Lithuania. I place a quarter teaspoon of the iodine back into the PolarPur bottle and it will work like new. The seller packages and ships very discreetly. The amount if crystal iodine you will get will probably ...

If you let them expire they may still work but they will probably be less effective. Considering how cheap they are and how long they last I replace mine before they expire. Getting sick sucks (and can be possibly fatal) from water born parasites. Don't take the risk. Do you wait for your car's brake shoes to fall off before you replace them?