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Free Delivery for orders over £50
M.s.r. MSR Miniworks EX Water Filter
M.s.r. MSR Miniworks EX Water Filter
M.s.r. MSR Miniworks EX Water Filter
M.s.r. MSR Miniworks EX Water Filter
M.s.r. MSR Miniworks EX Water Filter
M.s.r. MSR Miniworks EX Water Filter
M.s.r. MSR Miniworks EX Water Filter
M.s.r. MSR Miniworks EX Water Filter

M.s.r. MSR Miniworks EX Water Filter


MSR Miniworks EX Water Filter


The MiniWorks EX microfilter is the worldwide best-selling microfilter, delivering long-lasting, field-maintainable water filtration in demanding environments.

Engineered for frequent and heavy use, it utilizes our workhorse Marathon™ EX carbon/ceramic element to ensure clean, reliable and taste-free water.

Thanks to its innovative AirSpring Accumulator™, it’s capable of pumping one litre per minute and the flow rate can be renewed easily and repeatedly in the field—no tools required.

It’s lightweight and compact and, most importantly, been proven reliable by thousands of adventurers just like you.

Testing: Meets NSF protocol P231 for removal of bacteria (99.9999%) and protozoa (99.9%) from beginning to end of filter life in “worst-case” water.

Reliable: Durable carbon/ceramic element ensures safe, taste-free water—even with frequent, heavy use.

Field-maintainable: Can be cleaned repeatedly for full filter recovery with no tools required.

Fast Flow: AirSpring Accumulator™ increases filtration speed; up to 1-litre per minute.

Better-tasting Water: Carbon core removes unpleasant tastes and odours caused by organic compounds, such as iodine, chlorine, and pesticides.


Effective against protozoa Yes

Effective against bacteria Yes

Effective against viruses No

Effective against particulate Yes

Effective against chemicals/toxins Yes

Weight 1 lb / 456 g

Width 2.75 in / 7 cm

Length 7.5 in / 19 cm

Filter media Ceramic Plus Carbon

Filter pore size (microns) 0.2

Flow (L/min) 1 litres per min

Flow (strokes per liter) 85

Cartridge life ~2000 litres

Field cleanable Yes

Field maintainable Yes

Country of Origin Made in Seattle, USA

Mechanical advantage Yes

Water Bottle Adapter Yes

Cartridge replacement indicator Yes

Made in USA

Product Code: EATVC3TI0038

Shipping Policy

FREE Delivery on Orders over £100

For orders below £100 it's currently a very reasonable £3.99 charge.

* We are currently unable to offer an international order/delivery service. Delivery to BFPO usually counts as UK mainland, though (and some BFPO locations are also VAT-exempt).

Orders received by us before 12 Noon are sent by Royal Mail First Class Post or via our courier - depending on their size, weight, value and destination.

Orders received by us from Monday to Noon on Friday are usually delivered the next working day (working days are defined as Monday to Friday, inclusive).

Orders received by us from Friday afternoon to Noon on Monday are generally delivered on Tuesday.

Please note: We usually contact you personally to clarify delivery instructions for larger / more expensive items. This can add a short delay in despatching your order.

For Click & Collect: Please bring order confirmation, the card used for purchase and photo ID to collect your order from our Keswick store during normal opening hours. Please allow 2 working days.


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