RE: Over 49,000 cases today….19 Oct 2021 14:20
@WildGuess That's complete tosh.
Why should the filters only work for 7 hours just because that's the upper time limit on the testing of the masks?
It just doesn't follow at all.
Copper is quite likely to never lose it's antiviral ability. There could well be Bronze age artefacts sitting in museums somewhere that are still killing microbes even now.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3067274/
"It is noteworthy that in contrast to laboratory studies, in which unused copper surfaces are usually tested, this hospital trial employed “aged” surfaces. The items to be tested were installed at least 6 months prior to commencement of the study. This also allowed domestic staff and health care workers to become accustomed to the copper-containing fixtures. In addition, it provides support for the notion that copper surfaces will not lose their antimicrobial activity over time. Nevertheless, long-term studies are still required to evaluate the sustainability of the antimicrobial properties of copper surfaces over the course of several years."