Survival Spring by Alexapure (3-Pack)

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Survival Spring by Alexapure (3-Pack)
Price: $29.99
Shipping Options:: $5 Standard
Shipping Estimates: Ships in 3-5 business days (Wednesday, Dec 28 to Monday, Jan 02) + transit
Condition: New

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Plentiful Reviews over at My Patriot Supply

^^ And also much cheaper, there, of course.

And, of course, you missed that ours is a 3 pack. :tongue:

The reviews on amazon are longer and give a bit more detail:

https://www.amazon.com/Alexapure-Survival-Spring-Compact-Filter/dp/B0140UUXNE

Reviews indicate this one might be a sturdier build than other straw designs and the water bottle threading is a good touch. It’s difficult to use on the move(ie hiking) when you have to dip your straw into a wide mouth bottle or pour into a cup before drinking, then clean, dry, and put away the straw. I like the idea of being able to screw this onto the end of a water bottle.

This filter has pretty much the same filtering specs as a life straw, which Woot has sold here in the past. Straw filters rely on a mechanical filtering process involving drawing water through a tiny porous structure, rather than absorbent materials like a carbon filter(meaning it doesn’t do chemicals). It filters sediments down to .2 microns, which is too small for any bacteria or protozoa to pass through, but you need .1 micron filtration to be sure to get all viruses. There are some filters on the market that do .1 micron filtration, but I don’t know if any of them come in the straw design.

So with that said, keep in mind that it is designed to filter bacteria and protozoa, not viruses or chemicals. Straw filters do not filter urine or chemical pollutants, so you still need to be selective of your water source. If your neighborhood water retention pond risks runoff of motor oil, fertilizer, and other chemicals, you still shouldn’t drink from it. It also won’t work well abroad in countries that lack developed sewage and water infrastructure where viral contamination in tap water may be an issue, though you can supplement filtering by boiling water first. Some reviews talk about how good the water tastes through a straw filter. Don’t believe it. It might help the taste of water by removing sediments, but it does nothing to the PH and chemical content of the water. Polluted water will still taste polluted

From what I have read, viral outbreaks in tap water are rare in the US, and generally regional, so boiling water in addition to filtering is mostly overkill, but it helps to know the quality of tap water in your area. These filters really shine any time you are working with a source of fresh water away from civilization, like camping, hiking, or backpacking.

In my years of outdoor training and camping, I won’t touch anything short of a water PURIFIER. I don’t have issues with iodine for those that use it but for the money, if you are DEAD serious about protecting your digestive tract and you know for a fact, your water source is “clean”, by all means, go with a filter. Yes, you can add things to it to rid it of virus, but I’ve used the following products without worrying if I was going to wake up or end up doubled over either pooping myself or in the hospital.

LifeStraw Family 1.0
LifeStraw Mission
Grayle Ultra Light
Seychelle Flip Top Water Bottle with Advanced Filter (radiation filter)
Sawyer mini

The Grayle is the latest filter I added to my emergency bag and I put in my kid’s emergency bag (where he’s at school, 10 hrs way in a urban setting and have been known to have to boil water). I picked this as my primary water purifier because it’s fast (15 seconds for a, and it works. It’s also one of the only water purifiers under $75 that far exceeded the NSF International standards NSF/ANSI 42+53 test conditions. http://www.discountfilters.com/blog/nsf-ansi-certification/

Anyway, for 60 bucks on the mothership and it comes with the travel filter that filters the below items, this is all one needs to know:
The travel filter ($25 for replacement) removes:

Chemicals and metals, such as chlorine, iodine, lead, arsenic, and others. Also improves flavor and odor.
99.9999% of bacteria
99.999% of protozoan cysts
99.9999% of viruses

Cool review here http://snarkynomad.com/the-grayl-ultralight-is-here/

Not knocking the straw filters here but they have limits. And, as long as you know what’s upstream, it makes a nice backup or primary filter. Sorry for the rant but I see too many people buying “filters” when they think they are getting purifiers. Cheers