---
product_id: 246879908
title: "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"
brand: "membrane solutions"
price: "€ 71.21"
currency: EUR
in_stock: true
reviews_count: 13
category: "Membrane Solutions"
url: https://www.desertcart.ie/products/246879908-membrane-solutions-water-filter-straw-s2-nsf-ansi-42-372
store_origin: IE
region: Ireland
---

# Non-electric, no batteries needed 0.1 μm ultrafiltration membrane Detachable dual-end design 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

**Brand:** membrane solutions
**Price:** € 71.21
**Availability:** ✅ In Stock

## Summary

> 💧 Stay hydrated, stay ahead — the ultimate filter for fearless adventurers!

## Quick Answers

- **What is this?** 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 by membrane solutions
- **How much does it cost?** € 71.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/246879908-membrane-solutions-water-filter-straw-s2-nsf-ansi-42-372)

## 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

- • **Certified & Trusted:** NSF/ANSI 42, 372 & 401 certified for safety, lead-free materials, and superior performance.
- • **Lightweight & Ready:** Compact 3-ounce build with 5,000L capacity, perfect for hiking, camping, and emergencies.
- • **Ultra-Clean Hydration:** 4-stage filtration removes 99.99999% of contaminants for crisp, pure water anywhere.
- • **Effortless Maintenance:** Backwash via common bottle connection—no extra tools or syringes required.
- • **Modular & Money-Saving:** Unique detachable straw design lets you replace only the filter, not the whole unit.

## Overview

The Membrane Solutions Water Filter Straw S2 is a portable, NSF/ANSI certified 4-stage water purifier featuring a 0.1-micron hollow fiber membrane and activated carbon filtration. Its innovative detachable design allows easy filter replacement, supporting up to 5,000 liters of clean water at a flow rate of 500ml/min. Lightweight and battery-free, it’s engineered for hiking, camping, survival, and emergency use, ensuring safe, great-tasting water wherever you go.

## 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 | #14,487 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #33 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 (1,828) |
| 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

![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 - Image 1](https://m.media-amazon.com/images/I/71HRmjwnhKL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/81lrV6xmkzL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/81buN1IMd1L.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/71X89kZN8BL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/81McYXzGImL.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!

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-30*