MSR HyperFlow Microfilter

Comments about MSR HyperFlow Microfilter:

I used to use the miniworks and wanted to lighten my load. This filter is amazing- its so light, easy to use, great taste of water, and easy to pump (seriously takes 1 minute to fill the nalgene). Beware of trail maintanence as you must flip the filters and reverse pump every 8 liters.

Comments about MSR HyperFlow Microfilter:

This is a great little filter from MSR, I have used most brands and models that have been on the market for the last 20+ years and this is revolutionary. This has replaced my MSR Miniworks on most of my trips. I have pumped an estimated 600 liters of water, without fail. As with every piece of equipment I own, I do have a few complaints. One is that the disassembly for backflushing can be difficult in the field, especially if the inside thread assembly has been overtightened. The other is that the inflow end (the part that goes in the water) tends to want to turn over and sucks a little to much air. But all in all, it is a great filter and both of my complaints can be solved once you get use to your equipment. One more thing, I am not at all surprised by the love it or hate it responses that this product has received. It reminds me many years back when the MSR Whisperlite stove became all the rage, with accolades from all the major mags. I bought one and hated it with a passion, and being a sucker exchanged it 3 times before I decided not to let it compromise my safety any longer. MSR is always cutting edge, maybe the have a QC or outsourcing problem.

Comments about MSR HyperFlow Microfilter:

As I planned a five-day hike of the 100 Mile Wilderness last week, I realized that a great way to reduce my pack weight would be to carry no more than a liter at a time and to drink 3/4 liter each time I filtered water. However, I had found that assembling and pumping a liter of water with the Katadyn Hiker typically took about ten minutes, time I did not want to spend 3-4 x daily. Consequently, the MSR Hyperflow held great promise given that it is carried fully assembled AND that it purportedly pumps as fast as a big squirt gun. Unfortunately, after the first two days, pumping the Hyperflow became excruciatingly difficult, despite my conscientious backflush cleaning of the filter daily. I assembled and reassembled numerous times, expelling all trapped air, and still no better. These efforts plus the constant concern that a dropped pack might fracture the filter without any obvious sign of fracture made the whole process quite annoying. In the field, doing the backflushing every 8 liters, and checking for a broken filter by the bubble test is really quite problematic. Finally, the claimed weight of 7.5 ounces is inaccurate. The assembled unit with its little carry case weighs 10 ounces, only 2.5 ounces less than the much more reliable Katadyn Hiker.

Comments about MSR HyperFlow Microfilter:

I bought this filter 2 months ago for my summer trip to Philmont. I have only used it on one hike prior to. I have not even made it to my trip yet and the filter is already broken. I took great care of it. I let it dry after it was used and i cleaned it too. The problem lies in the pump outlet where the threads have broken. It happened when I took it apart. I heard a small crack but none of the treads were crossed so in the end I am really disapointed.I can't believe that it happened while loosening the threads. It would have been more likely for it to happen screwing in the filter. It all lies in the quality of this filter. I am going to switch to the Katadyn Vario Microfilter because everyone I have talked to who owns one in my crew says the filter is bombproof. Don't buy this filter.

Comments about MSR HyperFlow Microfilter:

I was really looking forward to HyperFlow Microfilter. I do a lot of camping with the Boy Scouts. I though this would fit my needs. I understood that I would have to back flush every 7-8 liters of water and have no problem with this. I tried the HyperFlow Microfilter at home and it pumps easy and fast. The problem I found is in back flushing. If you sucked air in the pump is would lock up. I called MSR. They told me to watch their video on their wed site. I did. So I tried to back flush again. Locked up. I feel the HyperFlow Microfilter need a lot of patients and time to back flush and you don't always have this in the field. I felt the HyperFlow Microfilter would not work for me and my scouts. I returned it to EMS and purchase MSR MiniWorks and very happy.

Comments about MSR HyperFlow Microfilter:

not hard to pump and easy to clean had no problems at all looking to buy a second one for my son

Comments about MSR HyperFlow Microfilter:

The pump works great and produces one of the best flows I've seen with any other filter. Unfortunmately after the fourth trip (about 12 days 80+ liters) the filter clogged quite suddenly and this was with regular back flushing per the manufacturers instructions. I called cascade and they sent me a new one no charge and over night.It works great again. Hopefully it holds up longer and we don't run into a similar problem

Comments about MSR HyperFlow Microfilter:

I bought this filter thinking that the new MSR filter cartridge had fixed all the problems and the negative reviews were from people who didn't pump right or something. I was wrong. I tested it at home and after 8 liters or so, it became increasingly hard to pump. So I returned it to EMS and bought the Katadyn Hiker pro.

Comments about MSR HyperFlow Microfilter:

I bought it first, THEN read all the reviews - many of which are extremely negative. I figured I would wait and see if I would be happy with it or not. I used the product at home to test it out and it worked fine. I used it with no problems whatsoever for three short trips. The only design problem I noted is that the pre-filter tends to float and flip over on it's back and suck air. I would have to hold it under water (off the bottom) with my foot or a rock. I followed the instructions to the letter and back-flushed it routinely. On the fourth trip it slowed down on the second liter pumped and never recovered. The filter didn't respond to repeated back-flushing. Although the filter is supposed to last through 1000 liters mine failed with about only 20 liters through it. It used to pump 3 liters per minute effortlessly, but ended up pumping only 1 liter in 1-1/2 minutes with great effort. It requires too much maintenance which doesn't restore the filter to even reasonable flow rates. Be aware that you cannot drop this filter or expose it to freezing temperatures (they recommend putting it in your sleeping bag with you overnight) - it's not a very robust system. Because of that and because the water I routinely filter is lake water that is not cloudy or silty and this filter didn't even last through 20 liters, then it's not for me. [...] I bought a Katadyn Hiker Pro and will see how it holds up this season.

Comments about MSR HyperFlow Microfilter:

I read the complaints and had a few myself. I called MSR and found out that they had a recall on the first round of filters. (they clogged real quick)I got a replacement in the mail and it's been smooth ever since. At first I didn't like the pre-filter screen until I had to flatten it out against a rock with a small trickle of water going across it in Zion Natl' park. Now I understand. I even abused it in the silty rivers in the Adirondacks. It's a good filter.