{"product_id":"membrane-solutions-gravity-water-filter-pro-6l-with-extra-ws02-straw","title":"Membrane Solutions Gravity Water Filter Pro 6L with Extra WS02 Straw","description":"\u003cp\u003eIn this review of the Membrane Solutions Gravity Water Filter Pro 6L the bottom line is straightforward: this is a practical, group-oriented water filter for camping, hiking, and emergency use that prioritizes capacity and reliable filtration. The reviewer found the single biggest reason to buy is the extra-large 6L reservoir paired with a 0.1-micron hollow fiber membrane that filters up to 5,000 liters, making it ideal for small groups who need repeated access to safe drinking water without constant maintenance.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra-Large Capacity:\u003c\/strong\u003e The 6L reservoir supplies enough treated water for a small group, reducing trips to the stream and the need to constantly refill.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Stage Filtration:\u003c\/strong\u003e The combination of 0.1-micron hollow fiber ultrafiltration, coconut shell GAC and dual PP fiber filters reduces bacteria and improves taste for safer drinking water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Filtration Volume:\u003c\/strong\u003e The system is rated to filter up to 5,000 liters of outdoor water before replacement is required, making it useful across many trips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Backwash Solution:\u003c\/strong\u003e The detachable mouthpiece connects to a common bottle for simple backwashing so cleaning is tool-free and lightweight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Use:\u003c\/strong\u003e The components can be used as a gravity system, as a direct water filter straw, or connected to bottles and an extension tube for flexible field use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Hanging:\u003c\/strong\u003e An adjustable tree strap fits trunks from 22.5 in to 41.5 in for convenient suspension over a camp site.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Membrane Solutions Gravity Water Filter Pro 6L is best for campers, backpacking groups, and small families who need a high-capacity, low-effort source of potable water at base camp or during multi-day outings. It suits users who value simple maintenance and the ability to filter larger volumes without carrying many spare filters.\u003c\/p\u003e\n\u003cp\u003eLess suited are solo ultralight hikers who prioritize minimal weight and pack bulk, and anyone who needs instant pressurized flow for cooking or dish washing; this is a gravity system designed for drinking water and camp use rather than indoor plumbing replacement.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 6L reservoir provides sustained access to treated water for groups without frequent refills.\u003c\/li\u003e\n\u003cli\u003eEffective multi-stage filtration (0.1-micron hollow fiber plus GAC and PP) that reduces bacteria and improves taste.\u003c\/li\u003e\n\u003cli\u003eBackwash via common bottle makes field maintenance simple and tool-free.\u003c\/li\u003e\n\u003cli\u003eFlexible use modes allow straw, bottle connection, or gravity setup for varied situations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGravity flow can be slower than pump systems and depends on elevation for fastest output.\u003c\/li\u003e\n\u003cli\u003eAt 6L the reservoir is bulkier than single-person filters, which may be excessive for ultralight day hikes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMembrane Solutions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGravity Water Filter Pro 6L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e6L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration Stages\u003c\/td\u003e\n\u003ctd\u003e0.1-micron hollow fiber, coconut shell GAC, double PP fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Volume\u003c\/td\u003e\n\u003ctd\u003eFilters up to 5,000 liters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackwash\u003c\/td\u003e\n\u003ctd\u003eDetachable mouthpiece connects to common bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTree Strap Length\u003c\/td\u003e\n\u003ctd\u003e22.5 in minimum to 41.5 in maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Membrane Solutions Gravity Water Filter Pro 6L is a smart buy for groups and base camp users who want reliable, large-volume filtration without complex tools. Its multi-stage 0.1-micron membrane and easy backwash make it good value for repeated trips, while the versatile straw and bottle connections add practical flexibility for varied outdoor setups.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow much water can the filter treat before replacement?\u003c\/strong\u003e\u003cbr\u003eThe system is rated to filter up to 5,000 liters of outdoor water under normal use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the system be cleaned in the field?\u003c\/strong\u003e\u003cbr\u003eYes, the detachable mouthpiece connects to a common bottle for backwashing so you can flush the membrane without extra tools.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this suitable for solo ultralight hikers?\u003c\/strong\u003e\u003cbr\u003eIt is functional for any user but the 6L reservoir adds bulk, so ultralight hikers may prefer a smaller straw-style filter.\u003c\/p\u003e","brand":"Membrane Solutions","offers":[{"title":"Default Title","offer_id":48685861404891,"sku":"B09HGS543P","price":79.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71aswadExUL.__AC_SX300_SY300_QL70_ML2.jpg?v=1778689353","url":"https:\/\/gearmusthave.com\/products\/membrane-solutions-gravity-water-filter-pro-6l-with-extra-ws02-straw","provider":"GearMustHave","version":"1.0","type":"link"}