Survival Water Purifier Straw with 0.01 Micron Filtration

The Hydration Dilemma

Worried AboutUnsafe Water Outdoors?

Whether trekking in the Scottish Highlands or facing sudden mains water failures, lacking clean water is an immediate threat.

Unsafe Wilderness Water

Even crystal-clear mountain streams often conceal sheep contamination, silt, and hidden organic impurities.

Heavy Pack Burden

Each litre of water adds 1kg to your rucksack, turning a scenic hike into an exhausting chore.

Emergency Vulnerability

Burst pipes or rural infrastructure outages leave families scrambling without safe drinking supplies.

85%

Wild water sources carry silt

3+kg

Saved rucksack weight

10x

Faster than boiling

The Hidden Hazard

Untreated Water CanRuinAny Adventure

Drinking untreated wilderness water can lead to severe parasitic infections, severe dehydration, and ruined expeditions far from emergency help.

Waterborne illness

Microscopic parasites and silt cause severe gut infections

Excessive rucksack weight

Carrying litres of bottled water drains your stamina quickly

Tedious purification delays

Chemical tablets taste awful and take 30+ minutes to work

Why risk waterborne illness when instant pure water fits in your pocket?

Invisible Trail Hazards

Micro-contaminants lurk in clear streams

The Lifesaving Solution

Pure FreshwaterAnywhere, Anytime

FiltSipy provides immediate 0.01μm ultrafiltration that traps fine sediment and particulates, delivering crystal-clear hydration instantly from rivers, tarns, and streams.

Without FiltSipy

Lugging heavy water bottles up long trail inclines
Anxiously rationing water on remote hikes and wild camps
Waiting ages for boiling or chemical purification tablets
Unprepared for rural water cuts and emergency disruptions

With FiltSipy

Drink safely from streams, lakes, and freshwater sources
Hike with a lighter pack by sourcing water on the trail
Instant filtration with zero pumping, chemicals, or waiting
Total peace of mind in any outdoor emergency or blackout

Removes Silt & Sediment

0.01μm ultrafiltration

Long-Lasting Supply

Up to 5,000 litres capacity

Versatile Connection

Fits standard 28mm bottles

Ultra-Light & Compact

Only 13.5 × 3cm in size

Proven Engineering

Built forWilderness Survival

Designed specifically for UK wild campers, bushcrafters, fell walkers, and survival preparation.

Micro-Precision

0.01μm Hollow-Fibre Membrane

The 0.01μm hollow-fibre ultrafiltration membrane physically blocks fine sediment, silt, micro-plastics, and organic particulates, turning murky streams into crystal-clear drinking water.

0.01μm Ultrafiltration Pore Size
Eliminates Silt, Sand & Sediment
Pure, Crisp Natural Flavour


Universal Fit

Dual 28mm Threaded Connectivity

Equipped with dual 28mm threaded ends, FiltSipy connects effortlessly to standard everyday water bottles, collapsible squeeze pouches, or gravity bags for hands-free group camp filtration.

Direct Stream Straw
28mm Bottle Mount
Gravity Bag System
Heavy Duty

5,000 Litre Reusable Lifespan

Engineered for reliable long-term survival and repeated wilderness expeditions. Each straw purifies up to 5,000 litres of water without ever needing costly replacement cartridges.

5,000L

Per Straw

BPA-Free

Food Grade

0W

No Power Needed

Pocket Sized

Compact Wilderness Readiness

Measuring just 13.5 × 3cm, FiltSipy clips onto your rucksack, slides into your pocket, or stores inside your car emergency kit. Complete with lanyard, clip, and protective travel pouch.

13.5 × 3cm Body
Clip & Lanyard
Storage Bag Included
Effortless Operation

Pure Water in3 Easy Steps

No tedious pumping, no chlorine tablets, and no battery charging. Just pure water on demand.

Dip or Connect

Submerge the straw into any freshwater stream, or screw it onto a standard 28mm bottle or squeeze pouch.

Drink or Squeeze

Sip directly from the mouthpiece or gently squeeze the bottle to fill your kettle or cooking pot with clean water.

Cap & Store

Blow out remaining water, secure the sealing cap, and pack into your rucksack or pocket ready for next time.

Instant Flow
0.01μm Pure

SeeFiltSipyin Action

Includes 2x 5,000L FiltSipy Straws
0.01μm Ultrafiltration Membrane
Dual 28mm Threads for Standard Bottles
Carrying Clip, Lanyard & Storage Bag
Why FiltSipy?

See How FiltSipyCompares

Engineered for British wilderness trails, wild camps, and crisis kits.

Scroll to compare
SpecificationFiltSipy
Pump Purifiers
Chlorine Tablets
Pore Size / Filtration0.01μm Hollow Fibre
0.1 - 0.2μmChemical only (No Sediment Filter)Rated Capacity5,000 Litres
1,000 - 2,000L50 - 100L per packDrinking SpeedInstant (Direct Sip / Squeeze)
Manual Pumping (Tiring)30-240 min waitPortability13.5 × 3cm (Pocket Size)
Bulky & HeavyChemical & Battery FreeDual 28mm Bottle ThreadsClean Natural TasteLeaves Foul Aftertaste

0.01μm

Ultrafiltration pore precision

5,000L

Litres filtered per unit

0

Chemicals or batteries needed

Frequently AskedQuestions

Everything you need to know about your outdoor water purifier.

What does FiltSipy filter out of freshwater?

FiltSipy features a medical-grade 0.01μm hollow-fibre ultrafiltration membrane. It physically filters out fine sediment, suspended particulates, silt, and sand from natural freshwater streams, rivers, and tarns.

How long does each filter straw last?

Each FiltSipy purifier is rated for up to 5,000 litres of clean water depending on source clarity. Your 2-pack bundle gives you an extraordinary combined capacity of up to 10,000 litres with no replacement cartridges required.

Can I screw it onto regular water bottles?

Yes! FiltSipy features dual 28mm threaded ends, allowing you to screw it directly onto standard plastic bottles (like regular mineral water bottles), collapsible squeeze pouches, and gravity filtration bags for effortless water transfer.

Does it require batteries or chemical treatments?

Not at all. FiltSipy relies entirely on physical hollow-fibre ultrafiltration. It requires no batteries, electricity, chemical tablets, or chlorine, meaning your water always tastes completely natural and crisp.

How do I clean and maintain the filter?

Simply backwash the filter with clean water after heavy use to flush out trapped sediment, then allow it to dry before securing the sealing cap. Full instructions are included in the user manual.

Can I use it with seawater or brackish water?

No, FiltSipy is designed exclusively for freshwater sources such as lakes, rivers, streams, and rainwater collection. It is not suitable for desalinating seawater or treating chemical waste run-off.

Pure Drinking WaterWherever You Roam