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Invisiblestubb
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Re: Anyone use UV-C for sterilization? [Re: nickchinn] * 1
    #28616341 - 01/10/24 12:23 PM (17 days, 14 hours ago)

Quote:

nickchinn said:
Some guy in the reviews said he tested it on his N95 masks and it works.





Quote:

I buy this light to sterilize my n95 masks. It is very important that this light do sterilize. If my mask is not properly clean and I believe it is clean,then I will end up cross contamination. I test it by putting a thin polyester smelly sock inside a small box to sterilize for 5 minutes. The sock came out smelly. So I want to return it. But after fellow amazon customers reply to my concerns, I decide to keep it. Seller also sees my questions and provides documents to proof that this is a real uvc light and at the same time to solve my questions on why my smelly sock comes out smelly after sterilization. After answering all the questions seller asks, seller tells me to use it for 15 minutes and the smelly sock came out clean. Proof provides by the seller is not as persuasive as my own test which gives me a peace of mind.

I sterilize my n95 mask, car keys, letters, shoes, jackets and backpacks. In the past, I have to leave everything I used outside in my garage, read my letters in my garage, spray my car keys with alcohol, air out my n95 mask for ten days in order to reuse. Putting on a jacket that might be contaminated is really scary too. Oh. I just hate all these worries.

Now, after testing out myself that this light do sterilize. I sterilize everything I use from the outside. Thousands thanks to my fellow amazon customers who help me out and to the seller who has a lot of patience for answering all the questions. Having a light that really do the job is very important. Thanks to everyone

I put the light on the carton box to sterilize my masks but I don’t want my jacket to explose to uv because too much uv will lighten the fabric. I separated the jacket and the masks by using the carton.




:wowjustwow:


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You wake up. The room is spinning very gently round your head. Or at least it would be if you could see it which you can't.
It is pitch black.

> TURN ON LIGHT


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Invisiblestubb
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Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28625572 - 01/18/24 06:48 AM (9 days, 20 hours ago)

Quote:

Pscientist said:
Quote:

Stipe-n Cap said:
UV-C lamps are not permitted on cabinets at the NIH because the risk outweighs the benefit, If it's not good enough for them, it's not good enough for you.





In your claim you mention the risks of UV but then go on to say.


Quote:

Stipe-n Cap said:
UV-C is subject to the inverse-square law,  cannot penetrate glass, plastic, or liquids which makes UV quite pointless for mush cult.





When used properly UV light really isn't that unsafe, with an emphasis on properly. Does UV work to help sanitize a surface? Yes. Is it necessary for the work people do on this website? No. Are shoes necessary to walk outside? No.


Quote:

Stipe-n Cap said:
Even if UV-C were 100% effective, the moment the light is switched off in a normal open air environment, any benefit gained on the swings is lost on the roundabouts.





I agree with parts of this statement, but when you shut the light off the entire surface doesn't immediately become as contaminated as when you started (necessarily). Contaminants will fall randomly onto the surface over time. So the benefit is not all lost immediately, it is lost gradually over time (with regards to the surface sanitization). The light doesn't have to be used in an open air environment as you described though.



Quote:

Stipe-n Cap said:
UV-C provides a false sense of security, much like using antibacterial agar but without gruesome DNA mutations.





This is an unrelated point, but are you claiming antibacterial agar doesn't impede the growth of bacterial species that are sensitive to the antibiotic being used? I have to disagree with that.

Quote:

Stipe-n Cap said:
UV-C has very few, if any uses for home cultivation purposes, unless you're attempting some advanced mutagenesis type shenanigans.





This is probably true for the most part, but the OP was asking about the use of UV for sanitization purposes.


Quote:

Stipe-n Cap said:
UV-C absolutely does not outperform isopropyl for sanitizing your work surfaces, ISO conveniently comes with zero risk. You cannot sanitize the atmosphere, so stop trying.





Iso is flammable and must be purchased regularly, so there are risks and greater requirements for resupply. In an ideal world you should use both for maximum sanitization.

Also just to be a further contrarian, you can technically sanitize and even sterilize the atmosphere in small spaces like labs, this is how labs are decontaminated in cases of serious biological release. It can be done with formaldehyde gas, but before you even say it, of course it has no place in this line of work.


I agree with everything below.
Quote:


Ultraviolet radiation is a form of non-ionizing radiation, and biological effects from it vary with wavelength, photon energy, and duration of exposure. The 100-280 nm wavelength band is designated as UV-C, which is used for germicidal purposes.

The sterilization/decontamination activity of UV lights is limited by a number of factors, including:

Penetration – In the dynamic air streams of BSCs, microorganisms beneath dust particles, plastics, and work surfaces are not affected by the UV light because it cannot penetrate particles so far from the UV source.

Relative humidity – The germicidal effects of UV light drop off precipitously when relative humidity is above 70%.

Temperature and air movement – The optimum temperature for the UV lamp to be effective is 77-80 degrees F. Temperatures below this range result in reduced efficacy, and air movement can exacerbate this.

Cleanliness – Dust and dirt block the germicidal effectiveness of the UV lamp, so weekly cleanings are necessary.

Age – Check UV lamps every six months to assure proper function, as the amount of germicidal wavelength emitted decreases with bulb age and hours of use.

Overuse – UV lights are routinely left on overnight or longer in an effort to decontaminate workspaces, but this practice can result in the germicidal wavelength no longer being produced by the bulb.

For these reasons and other concerns, the National Sanitation Foundation (NSF) does not recommend the use of UV lights





:sun:




:shoedick:
Is this an endorsement? What's supposed to be the takeaway from all that?

OP asked:
Quote:

nickchinn said:
Anyone try this, or have honest feedback?



Have you? Do you?


--------------------
:mushroomgrow:
πŸ†ƒπŸ„΄πŸ…°πŸ„Ό  πŸ…²πŸ„»πŸ…ΈπŸ„½πŸ…ΆπŸ…†πŸ†πŸ„°πŸ…Ώ

You wake up. The room is spinning very gently round your head. Or at least it would be if you could see it which you can't.
It is pitch black.

> TURN ON LIGHT


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Invisiblestubb
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Re: Anyone use UV-C for sterilization? [Re: Mwj12977] * 1
    #28625712 - 01/18/24 09:34 AM (9 days, 17 hours ago)

You jest, but things like that were considered. O3's heavier than O2 tho, the ozone layer is suspended betwixt the upward convection of the troposphere and the downward weight of the stratosphere. No good way to generate or to transport generated ozone up there, more practical to find alternatives to ozone depleting substances.


--------------------
:mushroomgrow:
πŸ†ƒπŸ„΄πŸ…°πŸ„Ό  πŸ…²πŸ„»πŸ…ΈπŸ„½πŸ…ΆπŸ…†πŸ†πŸ„°πŸ…Ώ

You wake up. The room is spinning very gently round your head. Or at least it would be if you could see it which you can't.
It is pitch black.

> TURN ON LIGHT


Extras: Unfilter Print Post Top
Invisiblestubb
Dahg Rastubfari
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Registered: 03/23/19
Posts: 1,310
Loc: Memory Flag
Re: Anyone use UV-C for sterilization? [Re: Pscientist]
    #28625895 - 01/18/24 12:53 PM (9 days, 14 hours ago)

Right on. I've only used UV-C tubes for EPROMs. Definitely underestimated it, burned myself pretty good first time I erased a bunch.
How do you employ your UV-C tube for cult work?


--------------------
:mushroomgrow:
πŸ†ƒπŸ„΄πŸ…°πŸ„Ό  πŸ…²πŸ„»πŸ…ΈπŸ„½πŸ…ΆπŸ…†πŸ†πŸ„°πŸ…Ώ

You wake up. The room is spinning very gently round your head. Or at least it would be if you could see it which you can't.
It is pitch black.

> TURN ON LIGHT


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