Outdoor Water Purifier Portable Field Dirty Water Purification Ultrafiltration Filtration Field Survival Water Purification Straw Tool2. Product Features: 1. Provide convenient, safe and clean outdoor drinking water2. Superior water purification capacity: at least 3000 liters of water can be filtered under normal conditions3. Remove at least 99.9999% of aquatic bacteria4. At least 99.9% removal of aquatic parasitic protozoa5. Reduce turbidity: it can filter out particles of about 0.2 microns6. No chemicals7. Large water flow (60CM elevation flow rate above 300ML per minute)8. No need for electricity/battery, or replacement parts (back flushable)3. Product life and functionIt can purify 3000L of water, and when the service life ends, the straw is blocked. Life cycle 3-5 years after the first use (after use, it needs to be cleaned and stored as required. Unopened products can be stored for a long time without deterioration and will not affect the use.)4. Average traffic: In the case of gravity filtration, the water head height is 60CM, and the flow rate is 250-300ml in 1 minute 5. How to use: Absorb the water with your mouth or siphon out the water with a silicone hose (gravity filtration), after use, drain or spin the water, and put it in the boxNotes:1. Please spit out the first saliva. 2. Filter water Do not collect salt water and chemically polluted water. 3. Do not put it in the microwave oven. 4. Please use clean water as much as possible, because sewage is easy to block the filter and affect the service life.