Filtration accuracy: 0.1 micron Net filter element: 40 grams Purified water flow rate: 0.6L/min Product specifications: 40* 146 mm Use water quality: flowing stream water, river water, etc. Water purification capacity: 2000L (different water quality will vary) Material: food grade ABS material, hemodialysis membrane filament, composite carbon fiber 1. Filter more: filter up to 2000 liters of natural fresh water without using any chemicals. 2000 liters of clean, drinkable water is packed in a backpack and carried with you. 2. Multifunctional design: easily set up a DIY filter system through soda bottles (such as Coca-Cola bottles, plastic bags, collapsible bottles or barrels). Or drink directly from the water source like a straw. 3. Easy backwashing: the threads on both sides of the filter. A convenient 28 mm threaded bottle can be screwed onto the outlet of the water filter for backwashing. 4. Reliable filtering effect: The portable water filter L630 uses 0.1 micron ultrafiltration membrane (medical grade material) as the filtering medium, which is effective against 99.99999% of aquatic bacteria. The entire filtration process is physical filtration. Bacteria cannot pass through the small holes in the membrane. 5. High-quality materials: impact-resistant and ultra-light L630 fits your palm. Backwashing can extend the service life. Note:  1. If you choose "Seller's shipping method", please note that this shipping fee is only applicable to some countries / regions, so after you pay, please contact us and we will confirm with you. 2. When the parcel arrives at your local customs, please pay the tax and take the parcel away. We do not bear any customs duties or import taxes. If the customs fails due to the buyer's reasons and the goods are returned or destroyed, we will not refund any money.  3. If you choose DHL, FEDEX, TNT, UPS, EMS, we will help you arrange international express delivery and deliver directly to your address (door to door service)! If the goods are delivered by courier, the buyer is only required to pay taxes upon arrival.  4. Before signing, you must check the package to make sure it is in good condition, and then sign it. If the package is damaged, please take a photo, then immediately complain to the shipping company, remember the complaint number, and then contact me, we will definitely help you.  5. Our working hours: 9: 00-18: 30 Beijing time. In the meantime, we will respond to your message promptly. During the break, we may not be able to reply to your message, please understand. We will reply you within 24 hours.