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Water Filtration Methods
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Thomas Roberts
(tr) - F

Locale: Southern California
Correction to above on 02/15/2008 20:49:02 MST Print View

Correction to above, not the same filter or pump, a filter will usually last a 4 or 5 day trip in the Eastern Sierras with no problem.

Mike W
(skopeo) - F

Locale: British Columbia
mUV Water Bobber on 02/16/2008 01:30:53 MST Print View


Edited by skopeo on 04/25/2015 20:42:55 MDT.

Andrew King
(drewboy) - F

Locale: Arizona
mUV Water Bobber on 02/16/2008 06:21:52 MST Print View

I got the mUV a few months ago. The initial production batch had some reliability issues (which they have now fixed), and I had to get mine replaced. The company was great to deal with, however and I got my replacement quickly. I have not yet been on a trip where I needed to treat enough water to see how long the battery actually lasts. I've gone 10-12 liters with no problem. What I usually do now is use the mUV for the times when I need to drink the water right away, such as on the trail or just after reaching camp. I use Micropur to treat a few liters when I initially reach camp and then allow a few hours for all the organisms to die and the ClO2 to dissipate so you can no longer taste it. The way that you re-charge the battery seems a liitle bit cumbersome to me. You need to fish out a couple of wires from inside the unit and then attach them to virtually any battery (1.5V, 9V, etc). It has built in regulator technology and can charge from any of them. That part is nice. The unit is compact and very lightweight, and so far my experience in the field has been very good. I have only used it with Nalgene collapsible wide mounth bottles so far, and just let it float around on top. Supposedly you can invert a platy and use it in the nozzle, but I don't have much experience with that yet. It ships with a mesh type carrying bag that also functions well as a pre-filter. It is a tight fit, but it does fits around the Nalgene wide mouth. So far I'm pretty pleased with it and think I may have found the best system for me, using both this and the chemical treatment.

Edited by drewboy on 02/16/2008 06:27:20 MST.

Brian UL

Locale: New England
Re: mUV Water Bobber on 02/16/2008 08:19:32 MST Print View

I remember a lot of talk on here about this a while ago. I just forgot about it and had no idea it was available now!
Ive always been a chlorine dioxide man myself but I might give this a try- thanks for the link.


Locale: Greater Gila
ULA Amigo on 02/16/2008 08:54:30 MST Print View

I'm a big fan of the ULA Amigo gravity filter if I want to use a filter at all. These days I really never take one and instead opt for chemicals. On the AT last year I used a few drops of bleach for each liter of water. I came to really despise the taste of bleach, although at first I didnt' mind it. Instead of switching to Aqua Mira, I never treated and was fine.

On the PCT this year, I'm finally switching over to Aqua Mira repackaged in the .35 L BPL bottles. I still don't plan to treat at every source, but if the water seems sketchy, I will. Chemicals all the way though for the weight issue.

Roleigh Martin
(marti124) - MLife

Locale: Moderator-JohnMuirTrail Yahoo Group
Re: ULA Amigo on 02/16/2008 10:27:40 MST Print View

How long does it take to filter with the ULA Amigo for a quart of water?

Mike W
(skopeo) - F

Locale: British Columbia
mUV Water Bobber on 02/16/2008 12:28:01 MST Print View


Edited by skopeo on 04/25/2015 20:43:28 MDT.

Andrew King
(drewboy) - F

Locale: Arizona
mUV in flashlight mode on 02/16/2008 18:17:16 MST Print View

I haven't used it very much in flashlight mode. I did just now mess around with it some and it throws out a reasonably bright light, which is somewhat focused into a beam. It would definitely work OK as a backup flashlight if needed. I'm not too sure about battery life though. They don't mention any spec for that on their website.

Eric Blumensaadt
(Danepacker) - MLife

Locale: Mojave Desert
TOO funny! on 02/16/2008 22:07:42 MST Print View

I have to laugh at all the water treatment devices people have.
Ben, you make me feel SO much better with my:
1. TWO First Need filters (long story)
2. PUR/Katadyn Hiker filter W/ purifer add-on
3. iodine tablets
4. Katadyn chlorine dioxide tablets
5. water bottle purifer
6. drinking straw filter
7.. and just yesterday... my SteriPen Adventurer/solar charger combo

Yeah, sorta like my stove (and tent) redundancy.

Hmmmm...could these be signs of a serious gear acquisition problem? (NAAAA!)

David Noll
(dpnoll) - MLife

Locale: Maroon Bells
ULA Amigo on 02/17/2008 06:41:59 MST Print View

Just a couple of minutes per quart. The nice thing is you just
hang the filter and let gravity do the work. However, I would make sure I used it where the water sources were deep enough.
At least a few inches deep. They will gunk up faster in the BWCAW where there is a the water.