Laboratory Studies
LifeStraw® filters have been distributed in many countries worldwide. Vestergaard makes every attempt to ensure that local standards and country-specific certifications are met. For inquiries about LifeStraw® registration, certification and testing for a particular country, or for full copies of any of the studies/certifications listed below please This email address is being protected from spambots. You need JavaScript enabled to view it..
Study
Accelerated long-term aging test at turbidity of 300 NTU. Challenge water contaminated with bacteria E. coli and the bacteriophage MS2 to test the performance of microorganism reduction of the filters.
Institution
Bachema Microbiological Laboratory for Environmental Testing, Schlieren, Switzerland
Overview
Scope of the test was to monitor the flow rate over a long term test period and control the microorganism reduction performance to confirm the membrane durability and function.
Results
At all 3 test points of the challenge test the log-reduction could be shown to be better than at least 8.6 for bacteria and at least 5.8 for viruses, which exceed the required performance of WHO criteria for “Highly Protective” microbial water purifiers. Mean flow rate was 12 liters per hour.
Study
LifeStraw® Community evaluated for removal of E coli, MS2 bacteriophage and Microspheres (bacteria, virus, protozoan cysts).
Institution
Underwriters Laboratories Inc., Bangalore, India.
Results
No less than log 5 reduction for all three categories (bacteria, virus, and protozoa), which meets the required performance of WHO criteria for “highly protective” microbial water filters.
Study
LifeStraw® Community evaluated for performance in line with Mexican water testing standards which includes percentage reduction in total coliform and aerobic mesophilics.
Institution
Laborotorio Fermi, Mexico City, Mexico
Results
100.00% reduction in total coliforms; 100.00% reduction in total aerobic mesophilics.
Study
Confirmation of 20 nano meter pore size.
Institution
Para Membranes Co. Ltd, Korea
Results
- Log 7.28 reduction in bacteria
- Log 5.95 reduction in virus
- The results confirm the fact that the absolute pore size of the membranes is 20 nanometers.
