Analysis of Weeplow Claims vs. Available Tests

1. Analysis Protocol and Tested Volume

Tests on the filter Weeplow O'Pure 2 were carried out on small volumes of water and short term.

Examples of volumes tested and laboratories involved:

• Microbiological test:
  • Made by BCS Laboratories (USA).
  • Volume tested: 300 liters of water in 4 days.
  • Analysis of the reduction of coliforms, E. coli, Enterococcus faecalis.
• Virus test (MS2 Coliphage):
  • Made by SGS (China).
  • Test carried out when starting the filter, without mention of the total volume filtered.
  • Effectiveness of 99,9999 % against the MS2 Coliphage.
• Heavy metals and PFAS testing:
  • Made by SGS (China).
  • Test performed only at startup, without long-term testing.
  • Heavy metals tested: Lead, Arsenic, Cadmium, Nickel, Chromium, Copper, Aluminum.
  • PFAS tested: PFOA, PFOS, PFHxA, etc. with efficiency >99,9 %.

2. Validation problem on 22,000 Liters

• No mention of a test on 22,000 liters of water or a similar volume.
• Actual filter life is not validated by these tests.
• Tests only show initial effectiveness, but not degradation of filtration over time.

3. Implications for Filter Reliability

The tests do not guarantee that the filter maintains 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 (e.g. after 5,000 L, 10,000 L, 15,000 L, etc.).
• A check of the flow rate and saturation of the filter.

4. Comparison with Other Filters

5. Conclusion

The current results confirm a good start-up efficiency, but no test proves that filtration remains effective up to 22,000 liters.

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