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Katadyn
Katadyn BeFree 1.0L Water Filter
$44.95Cheaper
Best Backpacking Water Filters · head-to-head
Katadyn BeFree 1.0L Water Filter vs MSR Guardian Water Purifier
A sourced, side-by-side comparison. Katadyn BeFree 1.0L Water Filter is cheaper at $44.95. Every spec and price links to its source.
MSR
MSR Guardian Water Purifier
$350.87
Which is better: the Katadyn BeFree 1.0L Water Filter or MSR Guardian Water Purifier?
The Katadyn BeFree 1.0L Water Filter wins 1 of the 1 specs we compare head to head; the other wins 0. The Katadyn BeFree 1.0L Water Filter is the cheaper at $44.95. The Katadyn BeFree 1.0L Water Filter both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Katadyn BeFree 1.0L Water Filter | MSR Guardian Water Purifier |
|---|---|---|
| US price | $44.95 | $350.87 |
| Brand | Katadyn | MSR |
| Released | — | — |
| Filtration rating microns | 0.1 | 0.02 |
| Flow rate lpm | 2 | 2.5 |
| Rated lifetime (L) | 1000 | 10000 |
| Filter media type | hollow-fiber membrane (EZ-Clean) | advanced hollow-fiber membrane |
| Removes bacteria protozoa virus | bacteria and protozoa (no virus) | bacteria, protozoa, and virus (EPA-compliant purifier) |
| Weight (oz) | 2.85 | 17 |
| Field cleanable backflush | Yes | Yes |
| Cartridge replaceable | Yes | No |
Sources — Katadyn BeFree 1.0L Water Filter: katadyn.com (verified 2026-08-11). MSR Guardian Water Purifier: cascadedesigns.com (verified 2026-08-11).
What's the difference between the Katadyn BeFree 1.0L Water Filter and MSR Guardian Water Purifier?
Where the two actually differ on the specs we track (7 of 8). Matching specs are omitted.
- Filtration rating microns: Katadyn BeFree 1.0L Water Filter 0.1 vs MSR Guardian Water Purifier 0.02
- Flow rate lpm: Katadyn BeFree 1.0L Water Filter 2 vs MSR Guardian Water Purifier 2.5
- Rated lifetime (L): Katadyn BeFree 1.0L Water Filter 1000 vs MSR Guardian Water Purifier 10000
- Filter media type: Katadyn BeFree 1.0L Water Filter hollow-fiber membrane (EZ-Clean) vs MSR Guardian Water Purifier advanced hollow-fiber membrane
- Removes bacteria protozoa virus: Katadyn BeFree 1.0L Water Filter bacteria and protozoa (no virus) vs MSR Guardian Water Purifier bacteria, protozoa, and virus (EPA-compliant purifier)
- Weight (oz): Katadyn BeFree 1.0L Water Filter 2.85 vs MSR Guardian Water Purifier 17
- Cartridge replaceable: Katadyn BeFree 1.0L Water Filter true vs MSR Guardian Water Purifier false