Membrane Solutions S1 Straw Water Filter — NSF/ANSI 42/372/401 Certified Portable Survival Drinking Filter for Hiking, C

Survival-Ready Portable Water Filter Straw — NSF & SGS Tested

Clean drinking water in seconds. This compact straw is NSF/ANSI 42, 372, and 401 tested (Test Report NBF21-004693-01). It reduces chlorine taste and odor, lowers microplastics and particulates, and is made from lead-free materials. Lightweight and rugged, it’s built for hiking, camping, travel, and emergency kits.

Key benefits — solve real outdoor water problems - Instant safe-tasting water: drink directly from streams, bottles, or pouches in seconds.
- Removes taste, odor, microplastics and particulates: better flavor and clearer water.
- Keeps minerals intact: it does not lower TDS, so essential minerals stay in your water.
- Long-lasting and cost-effective: filters up to 1,320 gallons (5,000 liters).
- Ultra-compact and light: 7.1" long, 1" diameter, 2 oz. Fits in pockets and packs.
- Versatile connections: works with 28mm threaded bottles, soft water pouches, or as a gravity filter replacement for groups.

Why choose this water filter straw? - Triple NSF verification for trust and performance (NSF/ANSI 42, 372, 401).
- Finer filtration at 0.1 micron: higher accuracy than many straw filters.
- Fast flow rate: about 500 ml/min (16.9 fl oz/min) for quick hydration.
- Durable, food-grade construction: BPA-free ABS and sturdy plastics for outdoor use.
- Removable ends for cleaning and extended life.
- Proven and portable: small enough for everyday carry, strong enough for survival.

Features — what’s inside and how it helps - 5-stage filtration: 1. Coarse filter screen — removes large debris.
2. Double-layer PP cotton — traps fine sediment.
3. Coconut shell activated carbon — improves taste and reduces chlorine and odor.
4. Hollow fiber ultrafiltration membrane (0.1 micron) — removes microplastics and particulates.
5. Final clean flow stage — ensures fast, clear drinking water. - Does not reduce beneficial mineral content.
- Fits 28mm threaded bottles, cups, and many disposable bottles.
- Can be adapted to soft water pouches or used in gravity setups for groups.

Who this is for - Hikers and backpackers who need lightweight, fast filtration.
- Campers and anglers who want better-tasting water from natural sources.
- Travelers visiting areas with uncertain tap water.
- Preppers and emergency planners who need long-lasting, reliable filtration.
- Anyone worried about microplastics, chlorine taste, or lead in drinkware materials.

Technical specs at a glance - Certifications: NSF/ANSI 42, 372, 401 (SGS Test Report NBF21-004693-01).
- Filtration pore size: 0.1 micron.
- Flow rate: ~500 ml/min (16.9 fl oz/min).
- Lifespan: up to 1,320 gallons / 5,000 liters.
- Size & weight: 7.1" length, 1" diameter, 2 oz.
- Materials: BPA-free ABS, food-grade plastics.
- Fits: any 28mm threaded bottle or compatible pouch.

Bottom line Choose this NSF-tested, 0.1-micron portable water filter straw for reliable, fast, and mineral-friendly drinking water on every trip. It’s small, light, and built to last — ideal for hikers, travelers, campers, and emergency use.