- 3L Gravity Filtration: 3L water reservoir can be connected to the water filter for gravity water filtration. 3L collapsible water tank can be connected to another side of the water filter. The whole filtration system can be connected inline. You can walk away while the water filtered. It is unnecessary to watch it to make sure that it is going to overfill the water container. 3L = 0.79gallons. - 1L Attachable Collapsible Bottles: Threads on filter both sides. Collapsible bottles can be screwed on both sides of the filter. Water can be squeezed through the water filter easily. Or hang bottles with filter on your backpack and use gravity to filter water while walking. - Lightweight Filtration System: 300g (10.58 oz) is the whole weight of the system. Easy to store. Very light filter setup for volume water you get. 2000L drinkable water in your campsite satisfies your water need. - Endurable Water Container: Food-grade premium quality materials. The water bladder passed the pneumatic pressure test. A tough seal between bottle top and filter. It allows you to remain active without worrying about spills or leaks on the go. - Simplicity: Quick setup and quick disassemble. Get clean water to cook emergency dry-freeze food instantly for emergency situations. Product description Gravity Water Filtration System L630A Collapsible bottles set up a simple gravity filtraiton system effortlessly. Large Volume Water Tank ? Transport Large Amounts of Water Easily. Back Flushing with Ease Reliable Water Filter Straw Reliable Water Filter Straw 2000L drinkable water with you on the go Fast Flow Rate Included： Included： Water filtered at one time can satisfy the water needs of several people. There is enough clean water to ensure sanitary in campsite or emergency situation. 3L clean water for cooking freeze-dried food or instant noodles. This water filter comes with two collapsible bottles. Two bottles can be screwed on filter both sides. When the flow rate slows, Invert, and squeeze the bottle to start clean flow into filter and backflush. Physical filtration. Tiny particulate can not pass through UF membrane miniwell L630 uses 0.1 micron ultrafiltration membrane as filter media, Ultra-low pressure membranes ensure fast flow rate. Filter up to 2000 liters of natural renewable fresh water without using any chemicals. The ultra-low pressure membrane can ensure that the flow rate is still fast in the case of a small drop. Remove Tiny Thing in Water Hollow Fiber Save Money Back flushing for Cleaning 1. Miniwell Portable Water Filter 2.Dirty Water Reservoir( 3000ml) 3.Clean Water Tank (3000ml) 4. 2pcs * Collapsible Bottles(1000mL) 5. Silicone Hose and Hose Clip 6. Suspension Rope and Carabiner 7. Carry Bag in Black FAQ 1. How often do I need to backwash the system? It depends on the quality of the water source. When you feel the flow rate slows down, backwash can improve the flow rate. (Note: To extend filter life, always use the best freshwater source you can access. If raw water is cloudy, wait for the sediment to settle out until water appears clear and then filter the water above the sediment.) 2. Can I use water filtered from the system itself to backwash the filter? Yes. Filtered water from the filter can be used to backwash. This filtration system comes with two collapsible bottles. Two bottles can be screwed on filter both sides. When the flow rate slows, Invert, and squeeze the bottle to start clean flow into filter and backflush. 3. How do I know if it's time to replace the filter? No water flows out from the water filter even though you backwash the filter a couple of times. The filtration pores on the membrane are nearly blocked. It's time to replace the filter. 4. Does it filter salt water? No. Miniwell L630 filtration pore size on membrane is 0.1 micron. Dissolved salt passes through 0.1micron membrane. In other words, Miniwell L630 keeps mineral from nature fresh water sources in filtered water.