O’Pure 2 weekend: XXL promises, mini tests?

Analysis of VS WEPPOWER DE TESTS AVAILABLE TESTS

1. Analysis protocol and tested volume

Tests on the filter O'Pure 2 WEPPOW were made on small volumes of water And short -term.

Examples of volumes tested and laboratories involved:

  • Microbiological test:
    • Directed by BCS Laboratories (USA).
    • Volume tested: 300 liters of water in 4 days.
    • Analysis of reduction of coliforms, E. coli, Enterococcus faecalis.
  • Virus test (MS2 Coliphage):
    • Directed by SGS (China).
    • Test carried out At the start of the filter, without mention of the total filtered volume.
    • Efficiency of 99,9999 % against the MS2 Coliphage.
  • Heavy metal and pfas test:
    • Directed by SGS (China).
    • Test carried out only starting, without duration.
    • Heavy metals tested: lead, arsenic, cadmium, nickel, chrome, copper, aluminum.
    • Pfas tested: PFOA, PFOS, PFHXA, etc. efficiently >99,9 %.

2. Validation problem over 22,000 liters

  • No mention of a test on 22,000 liters of water or on a near volume.
  • The actual lifespan of the filter is not validated by these tests.
  • Tests only show an initial efficiency, but not the degradation of filtration over time.

3. Implications for the reliability of the filter

The tests do not ensure that the filter retains its performance after several thousand liters.

To validate a capacity of 22,000 liters, it would be necessary:

  • An analysis of contaminants at different stages of wear (eg after 5,000 l, 10,000 l, 15,000 l, etc.).
  • A verification of the flow rate and saturation of the filter.

4. Comparison with other filters

Criteria O'Pure 2 WEPPLOW (China) Black Berkey® (USA) Coldstream FTO+ (United Kingdom)
Number of contaminants tested ~50 200+ (extrapolated) 200+
Long -term saturation tests ❌ No ❌ No ✅ Yes
Pfas tests ✅ Yes (without proof of maintenance) ✅ Yes ✅ Yes
Strong scientific validation ❌ Limited tests ✅ Yes (EPA, NSF, ISO 17025) ✅ NSF standards

5. Conclusion

Current results confirm a Good efficiency at start -up, but No test proves that filtration remains efficient up to 22,000 liters.

If such a guarantee is advanced, it is based on a theoretical estimate and not on an experimental test.

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