Description

LifeStraw Mission Water Purifier 5L

High volume gravity water filter and purifier

• Products that use membrane ultrafiltration technology are classed as purifiers because they remove viruses.
• Protects against viruses, bacteria, parasites, dirt, sand, and cloudiness
• Meets NSF/ANSI P231 drinking water standards for the reduction of viruses, bacteria, and parasites
• Independently lab tested, durable and BPA Free
• Food grade materials (US FDA 21 CFR standards)
• Bag is made of durable, TPU laminated nylon 
• Every fill avoids single use plastic bottled water!
• Replacement filters and accessories available

Membrane Ultrafilter v Membrane Microfilter:

The difference between membrane microfilters and membrane ultrafilters is the pore size.  LifeStraw’s membrane ultrafilter pores are 0.02 micron —10 times smaller than the pores of the membrane microfilter. 

Both technologies work via the same mechanism, but ultrafilters also block viruses due to the smaller pore size. When dirty water enters the ultrafilter, the microscopic pores block viruses, bacteria, parasites, microplastics, dirt, and other turbidity forms. Clean water passes through the pores in the membranes making the water microbiologically safe to drink. Because of the smaller pore size, ultrafilters often have a slower flow rate or require more pressure to purify water than microfilters. 

LifeStraw Membrane Ultrafilters are capable of removing 99.999% (log 5) of viruses (including Rotavirus), 99.999999% (log 8) of bacteria (including E. coli and Salmonella), 99.999% (log 5) of parasites (Giardia and Cryptosporidium), and 99.999% (log 5) of microplastics.