This water purification straw is a high-performance portable water purifier that purifies sewage into drinking water with superb purification performance It effectively removes all the E. coli bacteria and parasites that cause common diarrheal diseases. No electricity or spare parts are required, so you can take it with you for safe and clean water. The new water purification straws no longer use iodine to purify water (previous generations required iodine), but use the new "ultrafiltration membrane technology", which not only significantly improves water purification efficiency, but also does not use any chemical media to purify water, so there are no problems or side effects.Water purification straws can not only provide safe and clean drinking water for victims of earthquakes, tsunamis, hurricanes or other disasters, but can also be used as a constant "defense weapon" for people traveling outdoors. It can be used to directly filter any dirty surface water (meaning water sources without any pollution and fresh water sources), and the water quality is higher than the standard log7-log8 of tap water in many foreign developed countries. 97.% of parasites and microorganisms and E. coli in water can be filtered, effectively preventing the occurrence of dysentery and other infectious diseases.Product features.Provide convenient, safe and clean outdoor drinking waterSuper water purification capacity: at least 1000 liters of water can be filtered under normal conditionsRemove at least 99.86% of E. coliRemoves at least 99.9% of water-borne parasitic protozoaReduces turbidity: filters out particles down to approximately 0.2 micronsPure physical purificationHigh water flow rateNo electricity/batteries, or replacement parts requiredProduct life and efficacy.Water purification straw achieves 1500 liters (1.6 times design life) under laboratory conditions (more stringent than EPA turbidity and organics requirements)Average flow rate280 ml/min at start of use280 ml/min between 10 and 200 liters250 ml/min between 200 and 500 liters170 ml/min between 500 and 1000 liters200 ml/min, average flow rate between 0 and 1000 liters