MSR HyperFlow Microfilter

2025-06-11T20:00:00

some parts are fragile but the filter is very convenient

Jennifer K.

Originally posted at

2024-11-15T19:00:00

When I know my water needs are not great I like bringing this because it is quick and light. Even

Mathew K.

Originally posted at

2024-07-29T20:00:00

Hint: when the chamber fills with water, there is always some air in it. Only push to pump water out until just before the air, ie: do not push bubble of air thru. So I tip the filter down toward the bottle and it works well. The filter does not like pumping air. This works well.

Jim

Originally posted at

2024-07-16T20:00:00

I bought this filter after a lot of research. It won in my opinion for a couple of reasons, 1. you can replace the filter and instead of just using for a year or two my wife and I have been using this filter for ten years now. We had to buy replacement filters but with proper care, MSR has videos for how to do you it, you can really get your money's worth. 2. It has stood the test of time and that is not that common anymore. Does this mean it's perfect, no. It can be a bit cumbersome to pump into a bottle. I also believe that the new design with the lid for a Nalgene bottle is an excellent addition. However, this is not practical for all senes some don't use these bottle. Overall it is a great filter and I would reamend it. 3. it work great for two people or a group!

Reuben A.

Originally posted at

2023-08-27T20:00:00

Light, small and pumps well.

Robert F.

Originally posted at

2023-06-05T20:00:00

Never worry about water again with this ultralight marvel!

Kyle D.

Originally posted at

2023-06-05T20:00:00

Never worry about water again with this ultralight marvel!

Kyle H.

Originally posted at

2022-10-30T20:00:00

I've had one of these filters since it's release, several years now. It's been my go to on backpacking trips, thru-hikes and backcountry hunting trips all over the western United States. I've supported multiple people in all of these scenarios with a single filter. I may have backwashed it a handful of times and still using all original parts... Just ordered a replacement filter and maintenance kit to ensure that it remains my go to for years to come.

Mat N.

Originally posted at

2022-10-30T20:00:00

I've had one of these filters since it's release, several years now. It's been my go to on backpacking trips, thru-hikes and backcountry hunting trips all over the western United States. I've supported multiple people in all of these scenarios with a single filter. I may have backwashed it a handful of times and still using all original parts... Just ordered a replacement filter and maintenance kit to ensure that it remains my go to for years to come.

Daisy H.

Originally posted at

2022-10-20T20:00:00

I have two for water ,treatment while guiding on rivers. My only problem is that I've lost the cover cap on one asked foe a replacement two months ago and of yet I've no response. I even sent pics. Love the machine hate the response time.

Bill W.

Originally posted at

2022-10-20T20:00:00

I have two for water ,treatment while guiding on rivers. My only problem is that I've lost the cover cap on one asked foe a replacement two months ago and of yet I've no response. I even sent pics. Love the machine hate the response time.

William W.

Originally posted at

2022-09-13T20:00:00

Hyper Flow Microfilter I just used my new Hyper flow Microfilter for a four night backprack trip in the Olympic National Park. It work effortlessly for me each day. I store it in the brain of my pack for easy access. After each use it fits compactly in the small bag it comes with. I actually look forward to the ritual of sitting by a mountain stream, river or lake and filtering water with the Hyper flow Microfilter. Thank you very, very much for this handy filter.

Mary R.

Originally posted at

2021-09-24T20:00:00

Outstanding product with a genius design. Solid build and easy workability makes this guy my new best friend for those back country outings. Not as light as the hand pump but probably more reliable.

Stephen R.

Originally posted at

2020-07-31T20:00:00

I have used approximately 6 different filters from 3 manufacturers. This one is the one I have been using exclusively for the past 8 years.

DudeOnRock

Originally posted at

2020-07-30T20:00:00

I have used approximately 6 different filters from 3 manufacturers. This one is the one I have been using exclusively for the past 8 years.

Dude R.

Originally posted at

2020-07-06T20:00:00

I've used the Hyperflow for years, including my PCT thru-hike in 2018. It works amazingly for the first 10 liters or so. Then it quickly gets plugged up and becomes very strenuous to pump. There's no way it gets the 3L/minute after a few days of use. The maintenance manual recommends backflushing every 8L. With a new cartridge, I was religious about backflushing every day or every other day on the PCT. It didn't help. It is a fantastic filter that I absolutely trust with my health, but it requires an incredible of amount of slow, labor-intensive pumping. A previous review says you should be prepared to buy a new $40 cartridge for every trip. I concur with this assessment.

Troop

Originally posted at

2020-06-25T20:00:00

At 55 years old and still hiking the mountains, light weight and durability is the key to keep on moving for me. This has been great for my multi day hikes across the Enchantments, WA.

Christopher

Originally posted at

2020-06-25T20:00:00

At 55 years old and still hiking the mountains, light weight and durability is the key to keep on moving for me. This has been great for my multi day hikes across the Enchantments, WA.

Christopher P.

Originally posted at

2019-12-02T19:00:00

Love this pump so much I bought a second one. I got tired of swapping bag to bag and now I always have one on me no matter what trip I am going on. Such a simple, fast and effective way to collect drinking water in the backcountry.

Conrad%20

Originally posted at

2019-07-17T20:00:00

I've used this filter for close to ten years now. Filtering water from glaciers to muddy streams. It has always worked. (Sometimes slower than normal because I usually wait to be home to do back flushing and maintenance.) it has worked well for me in all temps from below freezing to sweltering. While it is light and small enough to bring on day trips I usually reserve it for longer trips when clean water is critical. Always in the pack when on multi-day/week trips.

Gilbert

Originally posted at

2019-07-17T20:00:00

I've used this filter for close to ten years now. Filtering water from glaciers to muddy streams. It has always worked. (Sometimes slower than normal because I usually wait to be home to do back flushing and maintenance.) it has worked well for me in all temps from below freezing to sweltering. While it is light and small enough to bring on day trips I usually reserve it for longer trips when clean water is critical. Always in the pack when on multi-day/week trips.

Gilbert H.

Originally posted at

2019-03-11T20:00:00

I've owned this filter for several years. I've used it for week-long trips with my wife and countless shorter trips. It's super light, small, very fast and reliable. The field serviceable back flow feature is a plus and prolongs the life of each filter. I doubt I'll ever own a different filter.

Dirtwalker

Originally posted at

2019-03-11T20:00:00

I've owned this filter for several years. I've used it for week-long trips with my wife and countless shorter trips. It's super light, small, very fast and reliable. The field serviceable back flow feature is a plus and prolongs the life of each filter. I doubt I'll ever own a different filter.

Fth

Originally posted at

2018-06-20T09:08:20

This is my 2nd one. These water filters are extremely reliable. My first one has lasted approximately 12 years. While I see my friends change their filter pumps every 2 to 3 years, this one remain reliable. Compact and light weight. Also provides relatively fast fills, especially if you are able to pin the pre-filter under water.

Matthew V.

2018-02-06T19:00:00

I have used it on a regular basis in and around So California - hunting, hiking, backpacking, etc. I use it mostly as a group filter as for solo trip I use a smaller filter. I've had none of the problems that some others have listed. I have back flushed the filter at home a few times for the heck of it. It continues to filter water quickly with minimal effort. The pre filter has a velcro strap to hold a rock or such. This holds the pre filter at the bottom of the creek or wherever you place it. My only complaint is that mine weighs more than the listed weight on this website, only a couple of oz difference but it adds up.

Chris

Originally posted at

2018-02-06T19:00:00

I have used it on a regular basis in and around So California - hunting, hiking, backpacking, etc. I use it mostly as a group filter as for solo trip I use a smaller filter. I've had none of the problems that some others have listed. I have back flushed the filter at home a few times for the heck of it. It continues to filter water quickly with minimal effort. The pre filter has a velcro strap to hold a rock or such. This holds the pre filter at the bottom of the creek or wherever you place it. My only complaint is that mine weighs more than the listed weight on this website, only a couple of oz difference but it adds up.

Chris H.

Originally posted at

2017-12-18T19:00:00

I have used this filter about 10 times now and It has not shown any sign off clogging; its fast and fills a 32oz nalgene (adapter cap included) in 20 strokes. It also attaches to a MSR Dromedary Bag, so you can have reserve water if needed (we always use every bit of pumped water for hanging out at the campfire and early morning cooking and refills for the next days hike). We have had several MSR water filters, stoves, etc... Always quality mountaineering products.

KenjiPrice

Originally posted at

2017-12-18T19:00:00

I have used this filter about 10 times now and It has not shown any sign off clogging; its fast and fills a 32oz nalgene (adapter cap included) in 20 strokes. It also attaches to a MSR Dromedary Bag, so you can have reserve water if needed (we always use every bit of pumped water for hanging out at the campfire and early morning cooking and refills for the next days hike). We have had several MSR water filters, stoves, etc... Always quality mountaineering products.

Peter

Originally posted at

2017-11-26T19:00:00

Super easy to use and backflow. The flow rate is as advertised.

scott

Originally posted at

2017-11-26T19:00:00

Super easy to use and backflow. The flow rate is as advertised.

Scott K.

Originally posted at