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MSR Water Purification
Hyperflow Mircofilter

I have been a fan of MSR for years and they have released yet another reliable product called The HyperFlow microfilter. It utilizes the latest hollow fiber technology which filters 0.2 microns similar to the Platypus Clean Stream. The Hyperflow has an advanced pre-filter to prolong the life of your filter which is a neat idea and design, but you might struggle from time to time keeping it facing down depending on the intensity of the water flow. A quick solution is attaching a rock to the back of the pre- filter pad. If you happen to be limited on water supply,  the pad is able suck water off a rock. The HyperFlow does require a bit of force to pump so I recommend it for 1-3 people rather than large groups. It is small (7x3.5 in / 17.8 x 8.3 cm), light weight (7.4 oz/ 209g) and so easy to use. Similar to the Clean Stream, the Hyperflow has tool-free maintainability making it  ideal for day trips and multi-day excursions.  Do not be fooled by its small size, this magnificent device can filter an impressive 3L of water per minute! (20 strokes) It also includes a quick connect bottle adaptor allowing direct connection to all MSR hydration products (how wonderful) and a variety of other wide mouth containers.To clean the filter, MSR recommends back flushing every 8 L. If you are not familiar with back flushing, MSR provide clear and easy instructions when you purchase the product. Remember,  proper maintenance will expand the lifespan of any filter.

Additional facts:
Effective against protozoa, bacteria, particulate
Up to 1000 L cartridge life (depending on conditions)


For those of you who dread the thought of pumping water, visit my review of the Platypus Clean Stream Gravity Filter. 

Platypus Clean Stream Gravity Filter

I recently gear tested the Platypus Clean Stream Gravity Filter and was pleasantly impressed by how quickly the micro filter purified 4L of water in less than 2.5 minutes. This device uses a revolutionary Hollow Fiber technology and gravity to do the work, no single pump strokes. It is very easy to use too! Simply fill the 'Dirty bag' with the water  and allow the water to flow through the tubing into the micro filter cartridge and then into the 'Clean bag' to enjoy effortlessly clean water.  It also has a quick-disconnect fitting  which allows for super easy removal and filling of the Dirty reservoir and back flushing for optimal performance! It is quite lightweight 13.7 oz/ 388g and ideal for two or a larger group. The Clean Stream is effective against protozoa, bacteria and particulates.

Retail cost: $99.95  ( I have found some great deals online)
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