--- product_id: 410983580 title: "Water Filter Straw S2, NSF/ANSI 42&372&401 Certified, 4-Stage 0.1 μm Portable Water Purifier with Replaceable Filter, 5,000L Capacity for Camping, Hiking, Survival and Emergency- 5P" brand: "membrane solutions" price: "฿5636" currency: THB in_stock: true reviews_count: 13 category: "Membrane Solutions" url: https://www.desertcart.co.th/products/410983580-water-filter-straw-s2-nsf-ansi-42-and-372-401 store_origin: TH region: Thailand --- # 500ml/min optimal flow rate 0.1μm ultrafiltration precision detachable & replaceable filter design Water Filter Straw S2, NSF/ANSI 42&372&401 Certified, 4-Stage 0.1 μm Portable Water Purifier with Replaceable Filter, 5,000L Capacity for Camping, Hiking, Survival and Emergency- 5P **Brand:** membrane solutions **Price:** ฿5636 **Availability:** ✅ In Stock ## Summary > 💧 Stay hydrated, stay ahead — the filter that’s as relentless as your adventure. ## Quick Answers - **What is this?** Water Filter Straw S2, NSF/ANSI 42&372&401 Certified, 4-Stage 0.1 μm Portable Water Purifier with Replaceable Filter, 5,000L Capacity for Camping, Hiking, Survival and Emergency- 5P by membrane solutions - **How much does it cost?** ฿5636 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/410983580-water-filter-straw-s2-nsf-ansi-42-and-372-401) ## Best For - membrane solutions enthusiasts ## Why This Product - Trusted membrane solutions brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Flow Rate:** Enjoy a steady 500ml/min flow, balancing speed with superior purification. - • **Certified & Trusted:** NSF/ANSI 42, 372 & 401 certified for odor, chlorine, and lead-free assurance—science-backed safety. - • **Innovative Detachable Straw:** Replace filters on-the-go without swapping the entire unit—smart savings for savvy adventurers. - • **Versatile & Ready for Anything:** Use directly, with bottles, or as a gravity filter—your ultimate companion for camping, hiking, and emergencies. - • **Ultra-Fine 0.1 Micron Filtration:** Removes 99.99999% of contaminants for crystal-clear hydration. ## Overview The Water Filter Straw S2 is a lightweight, portable purifier featuring a 4-stage filtration system with a 0.1-micron hollow fiber membrane and activated carbon. NSF/ANSI 42, 372, and 401 certified, it removes 99.99999% of contaminants while maintaining a fast 500ml/min flow rate. Its unique detachable design allows easy filter replacement without discarding the straw, supporting up to 5,000 liters of purified water—perfect for camping, hiking, survival, and emergency preparedness. ## Description desertcart.com : Membrane Solutions Water Filter Straw S2, NSF/ANSI 42&372&401 Certified, 4-Stage 0.1 μm Portable Water Purifier with Replaceable Filter, 5,000L Capacity for Camping, Hiking, Survival and Emergency- 5P : Sports & Outdoors Review: Excellent item - I’ve not used this product but upon inspection I think I will be satisfied with it. Review: I approve for zombie emergencies - Should last long enough to wait out all the zombies 🧟 💧 Last forever on shelf till you start using it. Hopefully never have to use it ! ## Features - ​Survival Gear for Outdoor Water Needs​​ - Certified by ​​NSF & SGS and rigorously tested to meet ​​NSF/ANSI 42, 372, 401 standards​​, this portable water filtration system ensures, drinking water in seconds. The NSF certifications validate its ability to remove odor and particles, while maintaining lead-free material. Lightweight and compact, it’s designed for reliability during hiking, camping, global travel, or emergencies—proven by science, trusted by adventurers. - Innovative Detachable Design: Our S2 water filter straw now is the only detachable straw on the market, both ends can be disassembled. That means it just needs to replace the filter element anytime and anywhere, no need to replace the straw tube shell frequently, which is truly money-saving. - Superior Backwash Solution: Detachable mouthpiece connects with the common bottle for backwashing, no need for an extra syringe, make easier. Camping water filter does not expire like water purification tablets and does not require batteries, very easy to use - 4-Stage Filtration: Our backpacking water filter is made up of 0.1-micron hollow fiber ultrafiltration membrane, coconut shell GAC filter, and double PP fiber filter. Removes 99.99999% of odor, chlorine, make water taste better. What's more, it can maintain the optimal flow rate (500ml/min) while the filter pore size is smaller. Long lifespan to provide at least 25,000 liters water. - Versatile Filtering Modes: Direct use as a personal water filter; also ideal for connecting with soft water pouch or standard disposable water bottles to get water; even add an extension silicone pipe (Tubing NOT Included) on emergency water filter for more distance to drink; plus, as a replacement gravity filter to provide enough fresh water for family & group. - Emergency Survival Tool: Match with Food-grade and BPA-Free materials ensure drinking water. An ideal tool for multiple purposes such as backpacking gear, hiking gear, travel accessories, camping & survival equipment and emergency preparedness items. Even the hiking water filter is also suitable as a gift for hikers. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09MQMYDPN | | Best Sellers Rank | #16,957 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #43 in Camping & Hiking Water Filters | | Brand Name | Membrane Solutions | | Capacity | 5000 Liters | | Container Type | Bottle,Syringe,Tube | | Customer Reviews | 4.7 4.7 out of 5 stars (1,826) | | Global Trade Identification Number | 00850071881783 | | Installation Type | Countertop | | Item Dimensions L x W x H | 8.66"L x 1.57"W x 1.57"H | | Item Weight | 3 Ounces | | Manufacturer | Membrane Solutions | | Material Type | Straw | | Maximum Flow Rate | 500 Milliliters Per Minute | | Model Name | gear | | Model Number | 5 | | Other Special Features of the Product | Portable | | Power Source | Non Electric | | Purification Method | Activated Carbon, Hollow Fiber Membrane | | Supported Water TDS Level Maximum (PPM) | 500 | | UPC | 850071881783 | | Unit Count | 5.0 Count | ## Product Details - **Brand:** Membrane Solutions - **Capacity:** 5000 Liters - **Installation Type:** Countertop - **Item Weight:** 3 Ounces - **Material:** Straw - **Package Information:** Bottle,Syringe,Tube - **Power Source:** Non Electric - **Product Dimensions:** 8.66"L x 1.57"W x 1.57"H - **Purification Method:** Activated Carbon, Hollow Fiber Membrane - **Special Feature:** Portable ## Images ![Water Filter Straw S2, NSF/ANSI 42&372&401 Certified, 4-Stage 0.1 μm Portable Water Purifier with Replaceable Filter, 5,000L Capacity for Camping, Hiking, Survival and Emergency- 5P - Image 1](https://m.media-amazon.com/images/I/71HRmjwnhKL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent item *by J***N on March 9, 2026* I’ve not used this product but upon inspection I think I will be satisfied with it. ### ⭐⭐⭐⭐⭐ I approve for zombie emergencies *by J***Y on January 3, 2026* Should last long enough to wait out all the zombies 🧟 💧 Last forever on shelf till you start using it. Hopefully never have to use it ! ### ⭐⭐⭐⭐⭐ Great when used with the bag. *by D***E on August 24, 2025* Love these with the water bag! Super simple and multifunctional. Price is great! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/410983580-water-filter-straw-s2-nsf-ansi-42-and-372-401](https://www.desertcart.co.th/products/410983580-water-filter-straw-s2-nsf-ansi-42-and-372-401) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-25*