O-B1 Outdoor Water Filter Pouch

Gravity and squeeze filter pouch built around a hollow fiber UF cartridge: 300 L lifespan at 150 ml/min, and 35 g dry. Rolls flat when empty.

Hollow fiber UF cartridge inside a soft pouch — filters by gravity or hand pressure.
300 L (approx. 79 gal) total filtered volume under standard water conditions.
35 g empty weight; rolls flat for packing.
No power, no pump, no spare parts.

CE marking - scope for this model

Model O-B1 is one of the 47 model codes on the product model table of certificate SC-ROHS-2026-08-04, issued 9 October 2026 by CERTIFICATION Center of Riga, Latvia against Directive 2011/65/EU, valid to 8 October 2029.

Being on that table places the model inside this certificate scope. It is not a statement about any other directive, and it is not a third-party test result for the unit you receive.

The certificate, in full

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Technical Specifications

Verified factory parameters — same data as our Alibaba.com listings

Model

O-B1

Filter cartridge

Ultrafiltration membrane

Lifespan capacity

300 L (approx. 79 gal)

Flow rate

150 ml/min

Weight

35 g

Series

Personal outdoor survival water bag

Follow the factory. See how membranes are actually made - new factory clips every week.