MSR Hyperflow fix

[Silver Bear]

I just copied the following statement from MSR's web site.
http://cascadedesigns.com/msr/water-...ation/category

It is located at the bottom of the page. Toward the bottom of the notice it gives a number to call & get a free replacement cartidge.

Important Notice

We have recently identified a flow performance issue with some of the hollow fiber filter cartridges contained in MSR HyperFlow microfilters currently on the market. The performance issue DOES NOT effect the product’s ability to filter safe drinking water but can be frustrating as the flow rate of the filter may not perform to product specifications. The issue has been rectified and all filter cartridges currently in production for the MSR HyperFlow microfilter perform to flow specifications.
It is our goal to provide you with the most innovative and reliable outdoor gear available when you need it most. You can be confident in the efficacy of the hollow fiber filter technology, but if you are experiencing a less-than-expected flow rate right out of the box or after back flushing, we want to know. Please contact our Customer Service Department at Cascade Designs, Inc. by calling 1.800.531.9531, and we will send you a valid replacement filter element at no charge. Please have your filter element handy as we will ask for the serial number for our records.

[Suttree]

Old news. See the post below (Feb2009) and related thread.

http://www.whiteblaze.net/forum/show...5&postcount=15

[High Altitude]

I still don't hear good things about this filter.

I was really hoping it would be a quality product that worked long term.

[Jester2000]

It's my understanding that all of the filters that shipped this spring had the updated version of the cartridge, so if you buy one now you shouldn't have to worry about this problem.

There were a number of thru-hikers passing through Harpers Ferry this year with them. They all reported that they were quite happy with the HyperFlow.

[FamilyGuy]

Ah why bother - just get yourself a Steripen. They are perfect. Just see the previous three threads on them.