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LifeStraw® FLEX replacement filter with hollow fiber membrane and activated carbon LS11132

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This replacement filter is compatible with LifeStraw® FLEX. It has hollow fiber membranes and activated carbon that reduce all harmful substances, microplastics, bacteria, chlorine and lead. It complies with NSF / ANSI Standard 42 for chlorine, bad taste and odor reduction, as well as with NSF / ANSI Standard 53 for lead reduction.

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Stage 1: The hollow fiber membranes remove:

  • 99.999999% of bacteria such as Brucella melitensis, Campylobacter jejuni, pasteurella tularensis, Pseudomonas aeruginosa, Shigella, Staphylococcus Aureus, Vibrio Cholera, Vibrio parahaemolyticus, Yersinia enterocolitica, Yersinia pestis, Enteropathogenic E.coli, Haemophilus influenzae, Klebsielia pneumoniae, Legionella pneumophia, Mycobacterium Tuberculosis, Mycoplasma pneumoniae, Pseudomonas pseudomallei, Salmonella hirschefeldii, Salmonella typhimurium, Salmonella typhosa, Shigella dysenteriae, Streptococcus pneumoniae, Streptococcus pyogenes
  • 99.999% of parasites such as Ascario lumbricoides, Cryptosporidium, Entamoeba, Giadia Lamblia, naegleria gruberi, schistosoma mansoni, taenis saginata
  • 99.999% of microplastics

Stage 2: The activated carbon reduces:

  • Chlorine and its spinoffs, such as chloroform
  • Bad taste and odor
  • Organic chemical matter
  • Pesticides
  • Herbicides
  • Lead and other heavy metals
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You can use the filter as a straw to drink water from the river directly!


  • LifeStraw FLEX includes the folding soft bottle, a syringe to clean the filter, 2 advanced water filters - one microbiological and one activated carbon filter.
  • Filtration technology: Hollow fiber microfiltration membrane (0.2 microns) paired with an activated carbon filter. The Hollow Fiber membrane is semi-permeable. All elements bigger than 0.2μm cannot penetrate it. Activated carbon is widely used in water filters and it is the main water filtering and processing medium worldwide.
  • Hollow Fiber lifetime: 2,000 liters (500 gallons). The membrane pores clog over time as the filter is used. At the end of its lifetime, you will notice that water finds it difficult to pass through.
  • Carbon filter lifetime: 100 liters (25 gallons). If you use it frequently, we recommend its replacement every 3 months.
  • Soft bottle material: TPU
  • Total weight including the filters: 222gr (0.49 lbs)
  • Bottle capacity: 650,6 ml (22 fl oz)
  • Soft bottle dimensions: 26,9 cm x 9,8 cm (10.6” x 3.85”)
  • Filter dimensions: 16,3 cm x 3,8 cm (6.42” x 1.49”)
  • Recyclable

Lab information

In LifeStraw, they believe that responsible manufacturing includes creating and maintaining a strong evidence base for their product claims and their intended impacts. All products undergo rigorous independent testing to meet or exceed protocols established by the US Environmental Protection Agency (EPA) and National Sanitation Foundation (NSF). They have also built and run an ISO accredited water laboratory based in Vietnam that does quality validation and testing of all new and existing products.

  • Hollow fiber membrane filter: 0.2 micron pore size. Removes 99.999999% of bacteria, 99.999% of parasites, and 99.999% of microplastics.
  • It also removes turbidity, mud and soil.
  • The activated carbon filter improves taste and odor while reducing chlorine and its spinoffs, as well as organic chemical matter such as pesticides, herbicides and VOCs.
  • It meets the US EPA drinking water standards for bacteria and protozoa reduction.
  • It meets the NSF/ANSI Standard 42 for chlorine reduction, bad taste and odor.
  • It meets the NSF/ANSI Standard 53 for lead, bad taste and odor reduction.
  • Water flow 0,9 liters/minute
  • EPA Ext. No. 95395-KOR-1

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