Outdoor Filter Straw
A filter straw is the smallest unit we make and the one where weight and flow matter most. All three models use a hollow fiber ultrafiltration membrane at 0.01 micron as the barrier stage.
O-A1 is the lightest at 38 g with a 3000 L capacity rating and 300 ml/min. O-A6 adds carbon fiber and PP cotton in a 65 g body. O-A7 adds a 304 stainless steel stage and lifts flow to 400 ml/min at 90 g.
No pumps, no batteries — you drink through the straw, which is why these are the models that go into emergency kits and go-bags.
Outdoor Filter Straw models (3)
O-A1 Outdoor Water Filter Straw
Four-stage personal survival straw: PP, activated carbon, PP and a UF membrane at 0.01 micron, rated for 3000 L of water at 300 ml/min. 38 g, no power or pumping required.
- 3000 L total capacity
- 300 ml/min flow rate
- 38 g lightweight body
- PP + carbon + PP + UF
O-A6 Outdoor Filter Straw
Multi-layer survival straw in ABS with food-grade silica gel, hollow fiber UF membrane, carbon fiber and PP cotton. Rated for at least 1000 L at 300 ml/min, and 65 g.
- ≥ 1000 L capacity
- ≥300 ml/min flow
- 65 g body
- 5-layer composite media
O-A7 High-Flow Outdoor Filter Straw
High-flow variant of the survival straw with a 304 stainless steel stage added to ABS, silica gel, hollow fiber UF and PP cotton. At least 400 ml/min — a third more flow than O-A6 at 90 g.
- ≥400 ml/min flow rate
- ≥ 1000 L capacity
- 304 stainless steel stage
- 90 g body