MSR
MSR Guardian Water Purifier
$350.87
Best Backpacking Water Filters · head-to-head
MSR Guardian Water Purifier vs HydroBlu Versa Flow Water Filter
A sourced, side-by-side comparison. HydroBlu Versa Flow Water Filter is cheaper at $25.95. Every spec and price links to its source.
HydroBlu
HydroBlu Versa Flow Water Filter
$25.95Cheaper
Which is better: the MSR Guardian Water Purifier or HydroBlu Versa Flow Water Filter?
The HydroBlu Versa Flow Water Filter wins 1 of the 1 specs we compare head to head; the other wins 0. The HydroBlu Versa Flow Water Filter is the cheaper at $25.95. The HydroBlu Versa Flow Water Filter both leads on specs and costs less — the straightforward pick.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | MSR Guardian Water Purifier | HydroBlu Versa Flow Water Filter |
|---|---|---|
| US price | $350.87 | $25.95 |
| Brand | MSR | HydroBlu |
| Released | — | — |
| Filtration rating microns | 0.02 | — |
| Flow rate lpm | 2.5 | 0.76 |
| Rated lifetime (L) | 10000 | 378541 |
| Filter media type | advanced hollow-fiber membrane | hollow-fiber membrane |
| Removes bacteria protozoa virus | bacteria, protozoa, and virus (EPA-compliant purifier) | bacteria and protozoa (no virus, no chemicals) |
| Weight (oz) | 17 | 2 |
| Field cleanable backflush | Yes | Yes |
| Cartridge replaceable | No | No |
Sources — MSR Guardian Water Purifier: cascadedesigns.com (verified 2026-08-11). HydroBlu Versa Flow Water Filter: hydroblu.com (verified 2026-08-11).
What's the difference between the MSR Guardian Water Purifier and HydroBlu Versa Flow Water Filter?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Flow rate lpm: MSR Guardian Water Purifier 2.5 vs HydroBlu Versa Flow Water Filter 0.76
- Rated lifetime (L): MSR Guardian Water Purifier 10000 vs HydroBlu Versa Flow Water Filter 378541
- Filter media type: MSR Guardian Water Purifier advanced hollow-fiber membrane vs HydroBlu Versa Flow Water Filter hollow-fiber membrane
- Removes bacteria protozoa virus: MSR Guardian Water Purifier bacteria, protozoa, and virus (EPA-compliant purifier) vs HydroBlu Versa Flow Water Filter bacteria and protozoa (no virus, no chemicals)
- Weight (oz): MSR Guardian Water Purifier 17 vs HydroBlu Versa Flow Water Filter 2