Posted: 6/29/2007 2:44:46 AM EDT
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looking at options for water purification in a camping/survival situation. I have use potable tablets and I have Polar pure, I am thinking of a Katadyn filter also but I have been reading that the Katadyn still needs to be treated chemically ?? So my question is what is better filter (think portable filters) or chemical treatment? |
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I just have Aquamira in my BOBs and recreational backpacking set-ups. It's small, light, quick, and easy. Really questionable water I'd just boil. For 'bug in' I'd boil. I also have a Katadyn filter(forget the model...Hiker maybe?) but with all the chemical alternatives and ability to make fire I'm running out of reasons to have it. I also have lots of potable aqua tablets but they taste funky and I have read a few people are concerned about continually ingesting iodine. I don't know if that is paranoia or justified. |
For crypto you need a filter or chlorine dioxide.
I have a Katadyn (Hiker Pro) that works fine for my needs, the only things it won't catch are bad chemicals in the water and small viruses that are not prevalent at ALL in USA water supplies as long as you aren't taking your water a few feet downstream from a rotting animal carcass. The chemicals-in-the-water problem isn't one that other chemicals can solve either. The only answer there is to distill it; boil it, and condense the vapor into a clean container. I keep some iodine tablets / chlorine drops on hand, but whenever I'm camping or hiking, I've only used the katadyn. |
Don't forget reverse osmosis. 
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Well yeah, but that has the same issue.. doesn't get all the organics, so you still need to boil it, chemically treat it, or use UV light on it.
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+3 with MSR WaterworksII and Aquamira Chlorine Dioxide Tabs as second and third backups Full-Auto |
How does the MSR compare to this First Need? I've used it in dirty cattle ponds with no ill effects. |
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The First Need is rated as a purifier and removes viruses, but uses a sealed cartridge. There is no need to treat with chemicals and filter so it is more convenient if you're worried about viruses. I know some say you don't really have to worry about viruses in most US water sources, but I tend to go the extra mile to be safe. As filters can clog in dirty water, the MSR seems like it is more versatile as the element can be removed and scrubbed. I have had good luck with The First Need Deluxe and haven't had to change a cartridge yet or had one clog. I use a coffee filter or inline gas filter as a pre filter to help avoid clogging. I like the fact that you can clean the element in the MSR Waterworks/Miniworks. You just have to be careful that you don't cross contaminate the clean side of the filter parts with dirty hands or dirty water in the process. Bottom line is the First Need works for me but I have the comfort of no serious weight/space restrictions so the Waterworks and tabs are always there as a backup. Full-Auto |