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58Sunliner

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Member since: Mon Feb 27, 2017, 12:17 PM
Number of posts: 3,983

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Stanford has done a study-released yesterday, about sterilizing masks.

https://stanfordmedicine.app.box.com/v/covid19-PPE-1-2

"In this materials science study of N95 face masks, two disinfection methods which do not reduce the filtration efficiency of the meltblown layer after an appreciable number of treatment cycles were found:
•Method 1: 75°C (158 degrees F) Hot Air (30 mins) for 20 cycles
•Method 2: UV (254 nm, 8W, 30 min) for 10 cycles. Steam treatment causes filtration efficiency to drop to ~85% after 5 cycles, and ~80% after 10 cycles."

I use my dryer shelf insert and use an infrared temp sensor. My dryer is an older Duet and I reach temps of 176 degree F in about 8 mins on the medium setting, which is supposedly a 32 minute cycle. Mine tends to shut off early so I go for 2 cycles.
Watch out for the metal nose bridge coming off. I re-glued one.

Information from Stanford about re-using N95 masks. Sterilization. Released yesterday.

https://stanfordmedicine.app.box.com/v/covid19-PPE-1-2

In this materials science study of N95 face masks, two disinfection methods which do not reduce the filtration efficiency of the meltblown layer after an appreciable number of treatment cycles were found:
•Method 1: 75°C Hot Air (158 degrees F), (30 mins) for 20 cycles
•Method 2: UV (254 nm, 8W, 30 min) for 10 cycles. Steam treatment causes filtration efficiency to drop to ~85% after 5 cycles, and ~80% after 10 cycles.

I use my dryer shelf insert and use an infrared temperature reader. Watch out for the metal clip coming off the nose bridge. I glued mine back on.

Italy's Coronavirus Death Toll Rises-

"Number of confirmed cases climbs to 1,835 in European country worst hit by outbreak.
The death toll from Italy’s coronavirus outbreak has risen to 52, an increase of 18 since Sunday, as the number of confirmed cases in Europe’s worst-hit country rose to 1,835.

The civil protection agency said 149 people had recovered from the virus, up by 66 since Sunday. The authorities said 742 people had been admitted to hospital, with 166 in intensive care. The vast majority of those infected had shown few or no symptoms and were recovering at home."

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