MSR Mission 5L Gravity Water Filter & Purifier

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A hight volume, microbiological gravity water purifier

Lifestraw says

High-Volume Gravity Water Filter and Purifier. Protects against viruses, bacteria, parasites, dirt, sand, and cloudiness. Independently lab tested, durable and BPA Free. Every fill avoids single use plastic bottled water!

Our Verdict

This is a perfect water treatment for groups of 2-3 hikers, its manufactured by a Switzerland-based public health company called Vestergaard, it uses a filter to get rid of 99.999% of Viruses, bacteria, and Protozoa.

It’s very simple to use, the large 5L bag is essentially a stuff sack, find some flowing water and simply scoop the bag into the water, then roll it down, like you would with a stuff sack. Find a branch that will take the weight of the bag and hoist it up using the straps provided.  Then simply attach the filter and let gravity do its thing.  It is by no means a fast flowrate, a 1-liter bottle will take about 5-7 minutes. so when you wish to fill up on water, it’s also probably a good time to take a break.  So we have a few pros and cons depending on what you are using this for.  Ultra runners and fast-paced solo hikers will have no use for this as it’s far too slow and would be much better off looking at the BeFree Water Filtration System which you can find here. However that doesn’t remove viruses, unlike the Mission 5L, hear in the UK that’s not much of a problem, but if you are planning a trip abroad or you are going with a group of people who don’t mind a slower pace, then the mission 5 could be the filter for you.

– Reviewed by Ultralight Outdoor Gear

Features

• High performance gravity purifier removes 99.999% of viruses (including Rotavirus, Hepatitis A), 99.999999% of bacteria (including E. coli, Salmonella), 99.999% of parasites (including Giardia, Cryptosporidium), 99.999% of microplastics, silt, sand, and cloudiness
• Filters up to 3.1 gallons (12 L) per hour, perfect for groups, camping, and survival
• Convenient roll-bag and shoulder strap for easy transport and flexibility to hang virtually anywhere; built-in backwashing system
• The long-lasting microbiological purifier provides up to 4,755 gallons (18,000 liters) of safe water
• This product gives back: one purchase, one child, one year of safe water 
• LifeStraw is proud to a B Corp and Climate Neutral Certified brand, committed to meeting the highest standards of verified social and environmental performance, transparency and accountability
• Meets NSF/ANSI P231 drinking water standard for reduction of viruses, bacteria and parasites

Specifications

• Weight: 418g
• 5L hose Length: 31.5 in | 80 cm
• 5L bag size: 15.8 x 6.7 in | 40.1 x 17 cm
• Filter size: 12.6 in | 320 mm
• Max flow rate: 3.1 gal/hr | 12 L/hr
• Membrane ultrafilter lasts up to 4,755 gal |18,000 L
• Includes:  5- or 12-liter gravity bag with quick-connect hose, water purification cartridge and built-in backwashing system

Help & advice:

• The Ultimate Guide to Water Treatment and Purification
• Time-Saver Guide to Water Purification