Electronics > Projects, Designs, and Technical Stuff
COVID-19 Emergency - Using UV Lamps to sanitize Face Masks overnight
not1xor1:
--- Quote from: Houseman on March 16, 2020, 05:07:48 pm ---Hi all forum.
I’m Steve writing from Milan in the north of Italy where the Covid-19 emergency is by far the most significant here than in other parts of Italy.
As you may know (what happens in all Europe) we have a shortage in the supply of the non-reusable FFP3 face masks and the ones only available are used and reused for days even more than the datasheet suggests.
Here doctors are even forced to work using simple tissue dentist masks.
Having a wife that is a doctor I am wondering if using technology I could avoid in some ways the danger of reusing the same mask over and over maybe touching her face with a contaminated mask.
--- End quote ---
both ethanol and isopropanol have been proven to kill the virus in 30 seconds (use pubmed or other reliable search engine to find scientific literature)
unlike ethanol, denaturated isopropanol doesn't stink and doesn't stain and in few hours evaporates completely (I tested that on my FFP3 mask)
isopropanol is widely used in hospitals but you can still find it easily on the web
Just yesterday I ordered another 5 liters supply from http://www.antichitabelsito.it/alcool_isopropilico.htm
so put isopropanol in one of those fridge boxes with airtight lid (PP or glass - doesn't matter) and leave the mask inside for a few minutes, than take it off, close the lid to reuse the solvent other times, and let the mask dry while you sleep.
hendorog:
Since this is an electronic forum - what about RF at a resonant frequency which destroys the virus?
I found this article where about 60GHz was effective for their sample, but its a bit old.
https://www.livescience.com/7472-kill-viruses-shake-death.html
PartialDischarge:
I personally find the UV light idea appropiate and easily doable given the small size and certain transparency in the filter material
https://youtu.be/SqytOuYfsnA
Buriedcode:
I'm not sure I've seen it mentioned here, but 70% isopropyl alcohol (rubbing alcohol) is more effective at disinfection than 80%+. Although I vaguely remember this being the case for bacteria, unsure about viruses.
Mechatrommer:
i find its funny when somebody or WHO? suggested that UV lamp should not be around bare skin. people go to beach to get sun tan. baby will get uv lamp treatment if found jaundice (or what?) darker people (which indicates more exposure to UV) are usually much resilient and stronger. and just yesterday, i fixed our front gate due to broken retainer by welding it again and now i have skin rash, tomorrow i expect some dead skin peeling off.. for countless number of time already... free sterilization in the process i guess, and new skin too.. my uv lamp (nail polish curer) that i used to cure solder mask or the uv lamp used in hospitals are nothing compared to that weld arc...
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