Doctrine // the why
MissionDefault doctrine: filter → chemical for any natural source. Boil if illness suspected upstream. UV (SteriPEN) backs up both. Sediment pre-filter (coffee filter) extends Sawyer life dramatically in silty water. Pump (MSR Guardian) lives in vehicle for high-silt or virus-risk sources only. Bladders, bottles, and the camp dromedary live outside the Hangar on Atlas external loops — this pouch carries the treatment hardware only.
Capability Redundancy // two is one, one is none
Primary
Sawyer Squeeze + Cnoc 2L dirty bag
Secondary
Aquatabs · 50 ct blister
Tertiary
Aquamira drops Part A/B
Quaternary
SteriPEN Adventurer Opti · UV
Last resort
Boil over M3 Cook Kit
Contents // 9 items
| Item | Qty | |
|---|---|---|
| Filtration | ||
| Sawyer Squeeze + backflush syringe | 1 | |
| Dirty bag 2L — Cnoc | 1 | |
| Chemical | ||
| Aquatabs · 50 ct blister | 1 | |
| Aquamira drops Part A/B | 1 | |
| UV | ||
| SteriPEN Adventurer Opti | 1 | |
| Accessories | ||
| Spare bite valves — Hydrapak | 2 | |
| Bladder repair kit | 1 | |
| Microfiber wipe | 1 | |
| Coffee filters · sediment pre-filter, 10 ct | 1 | |
Expirations // quarterly check
Aquatabs
2029-06-00
Long shelf — unopened
Aquamira drops
2027-08-00
After mixing: 4 hr
Refill Triggers // what makes you restock
- Sawyer flow rate droppedBackflush in field with included syringe. If still slow at home, deep-clean and consider replacement.
- Aquatabs blister openedUse within 12 months. Mark date on blister with Sharpie.
- SteriPEN battery lowCharge before every trip. Lithium AA fallback in M5 / M8.
Service Log // chronological
- 2026-04-26Built v1.0 baseline · Sawyer Have, SteriPEN Need — MJR
- — · — awaiting next entry