美国海淘    LifeStraw 生命吸管 野外水源净化器约￥105

see photo). I thought, this is going to be safe, but taste horrid. WRONG. TASTED LIKE THE FRESHEST SPRING WATER. Better than any tap. I'm from Maine, and I've tasted plenty of water right from mountain springs, so take my word. One caution: it can be a little challenging to start. You have to prove it by soaking. If it still doesn't work, blow into it a bit.Get one for your outdoor adventures, and one for your bug-out bag, which everyone should have in case of natural disaster (or apparently civil war, because the world seems to have gone mad).

ince getting a LifeStraw I most likely won't be doing that any longer since the LifeStraw is smaller and lighter than the First Need XL. I recently took a LifeStraw out for a test on a backcountry hike in the Rocky Mountains. Every stream, lake, or other water source that I came across I stopped for a drink. I was drinking fresh snow melt and also from lakes that are home to beavers and other wildlife. There was no added taste to the water and I didn't get sick during or after the trip.The one draw back to the LifeStraw is that it does take a bit of suction to start and keep the water flowing. When you're at high altitudes in the mountains this leads to longer "drink breaks" since you can get winded pretty easy while trying to suck up water through the LifeStraw. However, its size and weight advantages when hiking mountainous terrain vastly out weigh this minor drawback.Overall, the LifeStraw is awesome and I recommend it to every backcountry hiker that I know.

oing to test it on some stagnant water when we find it, and I've given instructions to lower this rating down to 1 star if I die.

sucked, to no avail. I couldn't get a single drop through the straw. My friends tried their hands at it as well and still couldn't get that life affirming liquid to their lips. We were doomed. We were going to die of dehydration out in the redwood wilderness, huddled around a useless LifeStraw.So we laugh it off and they make fun of me for the next several hours as we trek back to our car. I was a little downtrodden that I had wasted money on such a worthless product, even when everyone was saying how amazing and lifechanging it was! I was ready to just toss the piece of plastic off to the side and forget it among the trees. But I held on to it.Once I got home, I looked through the directions - and I realized my mistake. You are supposed to SUBMERGE IT before trying to get the water through. The water has to soak into the fibers totally before you begin sucking. So I grab a cup of water and dunk the LifeStraw into it, letting it soak for a few minutes. After the time passes, I suck... and WATER! I drink the whole cup up with very little issue. Frantically I call my friends and tell them how it wasn't a piece of junk and how we were just stupid guys who didn't read the directions.Ever since I learned the correct usage, I've used it on every hike I go on. It's an excellent piece of equipment to bring along and works well when you know how to use it. So trust what everyone else is saying - this thing works!

band and it will protect the filter with a lot less cleaning. The Water Filter will last 2X as long and cleaner water to drink!UPDATE - 4-25-2016After more than 3-years of numerous weekend and 2-week excursions, my very first LifeStraw would not produce anymore clean filtered water. I reluctantly open a NEW LifeStraw to complete the weekend of camping. It is tough to imagine more than 3-years of clean water from streams, lakes and rivers. I really don't know how many liters of water that was used, but I can say this....with the coffee filter attached to this unit it out last my friends LifeStraw more than a year. That alone has gotten to expand the use of this tremendously. Thank you LifeStraw, camping has been simple and healthy. I bought 8 more as backups!UPDATE - 2-13-2015....I have now used this camping several times. Now, I use a Portable Siphon Hand Liquid Transfer Pump with this unit. I can now add water to my pots, pans or my 3L water pouch easily. The suction usually will draw water for about 20 seconds; 2 cups of water in about a minute with the Transfer Pump!

gets everything. When I filled up my nalgene with water from the stream, after walking a bit I could definitely see the sediment start to settle; even made sure to get some with the straw just to see. Worked like a charm, just need to remember to blow into it afterwards to clear out the straw.

we could boil water, but that is time consuming, and we didn't have containers to allow us to cool it or carry it without stopping for a while. By using this to drink a lot of water while stopped at a water source, we could get away with boiling 1 quart each for our Nalgene bottles for drinking later. And then we carried untreated water in our hydration bladders. Then we could either use that for cooking or boil and drinking later.It wasn't ideal, but the alternative would have been to just take a chance on the water, or boil water at water sources and wait until it was cool enough to put into our hydration bladders. Since those are not likely made to handle boiling hot water, it would have meant a fair amount of waiting time. Temps were in the high 80's in the day.Drinking through this is pretty quick given it is filtering the water. Drinking a quart of water took slightly less than boiling a quart in a Jetboil stove. So that's maybe 5 minutes plus or minus. It kept us on schedule those last few days and we didn't get any waterborne pathogens.