Analysis of Weeplow Declarations vs. Available Tests

1. Analysis Protocol and Volume Tested

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

Examples of volumes tested and laboratories involved :

• Microbiological test:
  • Carried out 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):
  • Performed by SGS (China).
  • Test carried out at filter start-up, without mention of the total volume filtered.
  • Efficacy of 99,9999 % against MS2 Coliphage.
• Heavy metals and PFAS test:
  • Performed by SGS (China).
  • Test carried out only at start-up, without long-term testing.
  • Heavy metals tested: Lead, Arsenic, Cadmium, Nickel, Chrome, 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 on a similar volume.
• The real life of the filter is not validated by these tests.
• The tests only show initial effectiveness, but not the 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 the 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 good start-up efficiency, but no test proves that the filtration remains efficient up to 22,000 liters.

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