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MSR HyperFlow Microfilter
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#90
based on 54 reviews
Pros
Cons
- Hard to clean (26)
- Hard to pump (23)
- Flimsy valves (2)
- Poor filtration (2)
- Almost impossible to pump (1)
- Awkward pre-filter (1)
- Awkward prefilter (1)
- Awkward to use (1)
- Clogs easily (1)
- Cost (1)
Best Uses
- Backpacking (42)
- Hiking (32)
- Day trip (16)
- Car camping (5)
- Paper weight (1)
- Target practice (1)
Provided by REI
Backpacker April '08: ''The HyperFlow is so fast and light it converted several editors who had sworn off filters in favor of chemical treatment.''
| Specification | Description |
|---|---|
| Dimensions | 7 x 3.5 inches |
| Field cleanable | Yes |
| Filter medium | Hollow fibers |
| Housing material | ABS plastic |
| Output | 2.75 liters per minute |
| Pump force | Unavailable |
| Pump strokes per liter | 30 - 40 |
| Removes | Protozoa and bacteria |
| Weight | 7.8 ounces |
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Displaying 1 - 5 of 54 Reviews
- Avid Adventurer
[24 of 26 customers found this review helpful]
Information for you before you buy
- Easy to pump
- Lightweight
Pros
- None
Cons
- Day trip
- Hiking
Best Uses
"I thought that I had done all of my research on this product before I bought it, but upon it's arrival I found some information in the provided literature that was not anywhere else that I had looked.
This filter uses a "hollow fiber" filter. This is exactly what it sounds like. When you look at the end on the filter, you see what looks like a bunch of the ends of tiny straws. The upside is that this filter filters well, pumps very easily, and pumps a lot of water fast. After reading the reviews, and doing my own research I was sold. When I got the filter, I noticed a little "warning" in the instructions that says you shouldn't let the filter freeze, or be stored below 0 deg Celsius. If this happens, The filter will be damaged, and may not filter out all the nasties that can make you so horribly ill. I can only deduce that as the filter is a bunch of tubes, that if it were to freeze, the resulting ice expansion would shatter the tubes. This seems like a major over site to me. I have been out ALOT when the morning dew was definately morning frost. So, I really have to wonder if on the next morning I wake up like that, I will also get to wake up to a busted water filter.
The instructions also relate that a drop from as little as .9 meters can damage the filter resulting in nasties in your water again.
With all that said, it really is a joy to use. It pumps really fast, and is well designed other that the obviously delicate filter. I'm still taking it out this season, but I'm bringing extra treatment tabs, just in case."
- Avid Adventurer
[5 of 5 customers found this review helpful]
Works for about a day
Super Informative
- Good filtration
- Lightweight
Pros
- Clogs easily
- Hard to Clean
- Hard to pump
- No way to clean
- Permanently clogs
Cons
- None
Best Uses
"I just got done hik