mask sterilization

d
f

nt

t
n

on

es

e
e

le

s
n
f

e some

Absolutely not correct. Dry steam, yes, but steam can be "wet" meaning it contains water droplets. All steam is hot enough to burn, but wet steam ha s a higher energy density so can burn more quickly.

temperature of equilibrium between the liquid phase and the vapor phase, s o it can contain a great deal of water.

--
  Rick C. 

  -+ Get 1,000 miles of free Supercharging 
 Click to see the full signature
Reply to
Ricketty C
Loading thread data ...

On Friday, 14 August 2020 at 17:57:38 UTC-7, John Larkin wrote: ...

You mean like this from the beginning of April?

formatting link
nfect-n95-masks/

Or this in February:

"On February 9th 2020, Fudan University Shanghai Medical College, Ministry of Education / Medical Molecular Virology Laboratory of Health Committee an d School of Public Health together published a scientific research paper "E xperimental research on safe and rapid regeneration of disposable medical m asks". It was published in the Journal of Microbiology and Infection online version. The research paper confirmed that disposable medical masks could be disinfected by using following method: After using the mask, it can be w rapped with household fresh-keeping bags and treated with household electri c hair dryer for 30 minutes. After that it can be used again. This method d oesn?t affect masks original filter retention effect, and the conta minated viruses are inactivated!"

kw

Reply to
keith

Ah, some ChiCom guys with a hair dryer say it's okay. I feel so reassured. ;)

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
 Click to see the full signature
Reply to
Phil Hobbs

Specifically refers to a rice cooker ( . . . and two tea towels).

No pressure. No special hardware.

RH recorded as ~ 5% from natural ambient.

The temperature excursion from the crude built-in thermostat is recorded and reported in the article, as is the air temperature inside the cooker.

The reseults of 20 cycles is documented.

RL

Reply to
legg

No steam.

RH recorded as 5% from ambient sources.

Please read the source article.

formatting link

RL

Reply to
legg

Another advantage of this report is that it examines particle filtering effectiveness, not just 'fit' - and as you say, from a local source, referencing an actual temperature- controlled device of common use. If you want it from some white with the right party button on his lab coat, however, you'll have to wait.

RL

Reply to
legg

That was entirely uncalled-for. I'd like an apology.

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
 Click to see the full signature
Reply to
Phil Hobbs

My aplogies.

What part of ChiCom did I misunderstand?

RL

Reply to
legg

How often do you just have water vapour?

Usually there are water droplets mixed in there. In some circumstances they are superheated at >>100C. Such droplets can be extremely and expensively destructive.

Reply to
Tom Gardner

The 'Com" part.

The CCP has done a brilliant branding job, identifying themselves--in reality brutal communist oppressors--in the Western popular mind with the Chinese people. More recently they've extended that success outside their own borders, to fuse themselves in the Western mind with the entire "Chinese race", whatever that is, exactly. (Ask our own Edward how he feels about that.)

With the crackdown that has been going on for the last couple of years at least, nobody over there raises a peep that the CCP might frown on. They've enslaved the Tibetans and the Uighurs and got away with it.

They've now decided they're strong enough to get away even with extinguishing the remaining liberties of the very brave people of Hong Kong.

May God deliver their victims.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
 Click to see the full signature
Reply to
Phil Hobbs

nistry of Education / Medical Molecular Virology Laboratory of Health Commi ttee and School of Public Health together published a scientific research p aper "Experimental research on safe and rapid regeneration of disposable me dical masks". It was published in the Journal of Microbiology and Infection online version. The research paper confirmed that disposable medical masks could be disinfected by using following method: After using the mask, it c an be wrapped with household fresh-keeping bags and treated with household electric hair dryer for 30 minutes. After that it can be used again. This m ethod doesn?t affect masks original filter retention effect, and th e contaminated viruses are inactivated!"

Oh, good. I took ChiCom to mean that whatever comes out of China has to pass through the government. (Not that USA scientists seem much better these days. Is being under the 'funding tree' any different than working for the G'ment?

George H.

Reply to
George Herold

inistry of Education / Medical Molecular Virology Laboratory of Health Comm ittee and School of Public Health together published a scientific research paper "Experimental research on safe and rapid regeneration of disposable m edical masks". It was published in the Journal of Microbiology and Infectio n online version. The research paper confirmed that disposable medical mask s could be disinfected by using following method: After using the mask, it can be wrapped with household fresh-keeping bags and treated with household electric hair dryer for 30 minutes. After that it can be used again. This method doesn?t affect masks original filter retention effect, and t he contaminated viruses are inactivated!"

ng.

I find myself mostly confused by our dealings with China. (All administrations, starting ~ with Clinton.) I wish for a return of manufacturing to this country... that comes with pollution that has to be dealt with. (paid for.)

George H. Who wears his mask (bandanna) mostly to protect other people (shoppers) if I happen to be sick and don't know it. Bandanna's get washed then dried like other clothes. Someone could sell a UV light source that stuck on your dryer door.

Reply to
George Herold

Over here you might have to change jobs, though I haven't heard of that except in the most politicised areas such as climate and gender. Over there, you can easily get disappeared. Lots of people do.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
 Click to see the full signature
Reply to
Phil Hobbs

I bought a couple of valved ones back in February. The valves are very disappointing--the fancy masks are no easier to breathe through than the cheap ones without valves.

In any case, the valved ones that I've seen have separate N95 inserts, so you can take them apart, heat-treat the inserts, and wash the outer part any way you want--hot soap and water, alcohol, et cetera.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
 Click to see the full signature
Reply to
Phil Hobbs

God is too busy delivering the USA into the hands of a far more brutal tyrant, one who has much less thought of the long-term welfare of the populace than CCP does.

Reply to
Clifford Heath

On Friday, August 14, 2020 at 12:06:40 PM UTC-4, legg wrote:

Deja vu!

------------------------------- Subject: Re: Boris Johnson From: snipped-for-privacy@yahoo.com Date: Wednesday, April 8, 2020 On Wednesday, April 8, 2020 at 3:07:17 PM UTC-4, snipped-for-privacy@yahoo.com wrote: > On Wednesday, April 8, 2020 at 1:01:37 PM UTC-4, legg wrote: > > On Wed, 8 Apr 2020 09:10:00 -0700 (PDT), Michael Terrell > > wrote: > > > > > > > > > > China buys boatloads of used Corrugated Paper Boxes to recycle. I bought a small air compressor a couple years ago. They had glued a new layer on top of pieces cut from larger boxes, rather than make new corrugated paper. > > > > > > The used paper gets shipped there on empty cargo ships returning from deliveries around the world. > > > > > You can't make PPE from recycled cardboard, or newspaper. > > Cardboard and newspaper is largely ground-wood (think > > construction paper, from Kindergarden)and binder. > > > > Filtering PPE draws heavily on virgin 'sulphite' bales. > > Requires heavy chemical processing and post processing > > for fibre length and 'wet-strength'. > > > > RL > > I found this current article by the modern N-95 mask's electret > filtration's inventor useful: >

formatting link
> > Summary: > o The mask has a face-seal, an outer water-proofing layer, an > electret charged filtration layer, and a face-contact layer. > > o Contact with alcohol ruins the electret. >

Phil followed up, linking to a more complete discussion. Deju vu times two! :)

Cheers, James Arthur

Reply to
dagmargoodboat

utside

ward

Kamala Harris' webpage (memoryholed; you have to dig through the internet archives to find it) does indeed envision her an American Hugoette Chavez, who nationalizes people's property and choices, grants largess and indulgences and strips liberties arbitrarily, without the consent of the elected representatives of the People (and even over their opposition).

Of course that's illegal in the American system--that's a dictator.

Her pages remind me exactly of Robert Mugabee, whose rants I heard from but a stone's throw away in a neighboring country.

The media hate President Trump because our left has always filled themselves with tribal hate, since at least Gerold Ford. But the man himself has been an excellent when it comes to liberty, prosperity, and opportunity for all, with wonderful results.

When Kamala praises the Burn, Loot, and Murder movement she thinks she's gaining virtue-signalling points, but for most Americans it's a hard-logic turn-off.

People want jobs, not mobs, and mobs are all Kamala has to offer.

Cheers, James Arthur

Reply to
dagmargoodboat

bullshit. You can't run a rice cooker or hot pot dry, and sure as hell not for 50 minutes. Any rice cooker will sense the cook cycle is over and shut off. A cheap ass hot-pot will probably just melt, then blow a thermal fuse or catch on fire.

Reply to
Cydrome Leader

That's the way it is with the rice cookers we have here. I wouldn't go so far as to call the whole thing bullshit without knowing more, but I've been wondering about the kind of rice cookers you have over there.

Reply to
Pimpom

My rice cooker runs at 'full power' for about 20 minutes, but then it goes into low-heat standby; it's still keeping hot (and 70C temperature is likely maintained for the period required). The first part of the cycle definitely hits 100C .

It does NOT shut off until I unplug it. It does not catch fire or blow a fuse.

Reply to
whit3rd

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.