Bart van H writes:
I am lucky enough to live on the edge of the woods and dunes here on the coast so I can take long and lonely walks to stay healthy and sane.
The Dutch health authority has done some research into disinfecting masks for re-use an came up with a technique that is feasible to use in hospitals and allows 2 re-uses. It is not of much practical use to you (nor me), but it shows that degradation is a real issue, as expected. The document is available in English from our government website here: https://www.rivm.nl/en/documenten/reuse-of-ffp2-masks
DIGLLOYD: hey, don’t knock it till you try it (tea)!
Quoting from the above link:
The Dutch National Institute for Public Health and the Environment (RIVM) has conducted a pilot study and found a reprocessing method that leads to an acceptable quality of reprocessed face masks. The caveat is that only limited research has been done on the retention of particles by reprocessed face masks.
This study shows that FFP2 face masks retained their shape and were able to retain particles in a ‘quick’ test after sterilizing once and twice with a short hydrogen peroxide process. In times of scarcity, FFP2 masks can be used three times when sterilized twice with hydrogen peroxide in between use.
This finding appears to TRIPLE potential mask supply.
Unfortunately, the procedure does not appear to be suitable for home use.