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Thu Dec 17, 2020, 05:03 PM

Does anyone have info on quality UVC devices for personal use?

Looking at "portable, hand-held" units on Amazon, but want one with a strong enough light to be effective. Also would prefer one that the bulb can be replaced in & a good value for a reasonable price.

Tyia!

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Arrow 25 replies Author Time Post
Reply Does anyone have info on quality UVC devices for personal use? (Original post)
SheltieLover Dec 2020 OP
mucifer Dec 2020 #1
SheltieLover Dec 2020 #2
FarPoint Dec 2020 #5
Arne Dec 2020 #3
SheltieLover Dec 2020 #4
ProfessorGAC Dec 2020 #8
SheltieLover Dec 2020 #12
TomDaisy Dec 2020 #6
Arne Dec 2020 #14
TomDaisy Dec 2020 #16
Arne Dec 2020 #20
SeattleVet Dec 2020 #7
ProfessorGAC Dec 2020 #9
SheltieLover Dec 2020 #15
Arne Dec 2020 #17
ProfessorGAC Dec 2020 #21
Arne Dec 2020 #24
ProfessorGAC Dec 2020 #25
SheltieLover Dec 2020 #13
KY_EnviroGuy Dec 2020 #10
SheltieLover Dec 2020 #18
Native Dec 2020 #11
SheltieLover Dec 2020 #19
Native Dec 2020 #22
SheltieLover Dec 2020 #23

Response to SheltieLover (Original post)

Thu Dec 17, 2020, 05:07 PM

1. I have never heard proof it kills covid. Did something change? BTW wiping your phone

with alcohol wipes does kill covid.

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Response to mucifer (Reply #1)

Thu Dec 17, 2020, 05:10 PM

2. Not sure, but I think UVC kills covid

I've read of school systems putting in UVC systems to protect against covid. Might have been Colorado, can't recall.

Hospitals use UVC to disinfect.

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Response to mucifer (Reply #1)

Thu Dec 17, 2020, 05:33 PM

5. I don't know for sure either if UV light kills covid-19

I have heard that orthopedic surgery suites/operating rooms use them to kill germs.

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Response to SheltieLover (Original post)

Thu Dec 17, 2020, 05:10 PM

3. I tried two different types, they were both bogus.

If you get the ones that go inside the air vent ducts it may work.

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Response to Arne (Reply #3)

Thu Dec 17, 2020, 05:11 PM

4. Ty!

That's what I'm concerned about, buying junk or ineffective units. Ty!

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Response to Arne (Reply #3)

Thu Dec 17, 2020, 07:17 PM

8. Makes Sense

Inside a duct, the intensity of the light could be plenty high, because there's no risk of exposing people.
uV will destroy any virus, in the presence of air, by radicalizing double bonds in some the RNA nucleic acids. They fracture, and rapidly oxidize, ruining the reproductive code.
But, light intensity & time are reverse correlated.
A low intensity light may work, but in hours, not minutes or seconds.
In a duct, they could use a very intense light source, because people's eyes & skin aren't at risk.
And, since it's an installation, the current flow needed would be coming off the building's power, not a few D batteries.
I'd rather just use ethanol or a quaternized sanitizing agent.
I wouldn't trust these things. False sense of confidence.

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Response to ProfessorGAC (Reply #8)

Thu Dec 17, 2020, 09:12 PM

12. Thank you, Professor

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Response to SheltieLover (Original post)

Thu Dec 17, 2020, 05:46 PM

6. I have one that looks like a large make up case

it zippers closed. stands up on its own but has soft sides.

with lights on top and bottom and a rack in the middle. cost about $100.

use it for masks, phones, air pods, wallets, credit cards, glasses, etc.

Nice because I don't want to hold a wand for 30 seconds over an object. Also UV light is bad for your eyes.

Just plop items in box, turn it on, walk away, let it run. 90 second cycle. Mirrored interior. Light coming from all directions.

Certainly I can't prove that it is killing viruses. But I figure I will give it a shot.

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Response to TomDaisy (Reply #6)

Thu Dec 17, 2020, 09:13 PM

14. The UV frequency is the best measure of efficacy.

The mid to high range of 'C' rays I think.

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Response to Arne (Reply #14)

Thu Dec 17, 2020, 09:15 PM

16. unfortunately there's probably a lot of substandard product out there

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Response to TomDaisy (Reply #16)

Thu Dec 17, 2020, 09:17 PM

20. You can see bodily fluids with them.

Yuck and Yuck

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Response to SheltieLover (Original post)

Thu Dec 17, 2020, 06:56 PM

7. Just saw a review of one last week that runs about $20.

It's a hand-held unit (4-AAA batteries). The reviewer compared it to another that he had received, and this was MUCH stronger when he exposed the dosimeter card. Been watching this guy's YouTube videos for a while, and he's pretty straightforward and reliable.



(There's some preliminary discussion and stuff...product testing starts at about 5 minutes into the video.)

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Response to SeattleVet (Reply #7)

Thu Dec 17, 2020, 07:21 PM

9. I'm Dubious

The spectrochemistry doesn't work for me.
With 4 AA batteries, I have my doubt overall light intensity is sufficient to trigger the free radical reactions that result in viral denaturation. Certainly not in short time exposures.
10 second exposure to ethanol, or a standard consumer sanitizing cleaner, is proven to work, pretty cheap, and not that inconvenient.

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Response to ProfessorGAC (Reply #9)

Thu Dec 17, 2020, 09:14 PM

15. Ty again, Professor

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Response to ProfessorGAC (Reply #9)

Thu Dec 17, 2020, 09:15 PM

17. Me too, but there is a way to directly test. I forgot what he used.

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Response to Arne (Reply #17)

Fri Dec 18, 2020, 08:39 AM

21. I Question The Methodology

The decomposition mechanisms (except for one) require free radical formation, typically at a carbon-carbon double bond or an acyl group.
The formation is exponentially proportional to intensity (photon energy & amount of photons).
1/10th the photons leads to 1/100th of the radical formation. And, so on.
My dubiousness remains.

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Response to ProfessorGAC (Reply #21)

Fri Dec 18, 2020, 12:55 PM

24. There was a uvc light analyzer meter by Extech with a sensor used.

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Response to Arne (Reply #24)

Fri Dec 18, 2020, 02:58 PM

25. Tells Me Nothing

Sorry, but without knowing the exact frequencies & light energy emitted, I still question that these can achieve radicalization of the needed functional groups, and over what time interval.
What band & what power?
I simply don't believe something driven by AA batteries would supply the per second output to trigger those reactions.
I haven't done a ton in photochemistry, but I did all the academic work on it, and my expertise is in organic mechanisms.
You'll forgive my skepticism.

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Response to SeattleVet (Reply #7)

Thu Dec 17, 2020, 09:13 PM

13. Ty

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Response to SheltieLover (Original post)

Thu Dec 17, 2020, 07:50 PM

10. Try these sources.....

For the good stuff:

MRSA-UV Infection Control Products

https://www.mrsa-uv.com/products-prices.html

This is a nice unit that's used in doctor's offices:

Germ Mold Buster

https://www.germmoldbuster.com/Store/#!/UVC-Light-The-Germ-Mold-Buster/p/180103824/category=0

Smaller & not so expensive......

Homedics:

Link: https://www.homedics.com/sanitize/uv-clean/

Or, build your own: https://www.klaran.com/products/disinfection-modules/le-series-uvc-led-light-engines

I assume you have familiarized yourself with the dangers of using UV energy...if not, see:

Can UV Light Kill the New Coronavirus?
Healthline.com


Link: https://www.healthline.com/health/does-uv-kill-coronavirus#uvc-light-and-coronavirus

and........

UVC wands kill viruses. Experts warn they're also a 'major safety issue'
The invisible light can kill viruses and pathogens like the one that causes COVID-19, but experts are raising alarms about the potential safety risks.


Link: https://www.cnet.com/news/uvc-light-wands-kill-viruses-experts-warn-major-safety-issue-coronavirus-covid-19/

UVC light for disinfecting surfaces

Another study, also published in the AJIC, looked at using a specific type of UVC light to kill SARS-CoV-2 on laboratory surfaces. The study found that the UVC light reduced the live coronavirus by 99.7 percent in 30 seconds.

The type of UVC light used in this study is called far-UVC light, which is UVC light between the wavelengths of 207 and 222 nanometersTrusted Source.

Far-UVC light is still damaging to germs but is less of a hazard to your skin and eyes than other types of UVC light.


Hope these help. I enjoyed the bit of research!


KY..........

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Response to KY_EnviroGuy (Reply #10)

Thu Dec 17, 2020, 09:16 PM

18. Ty, KY

Wow, you really did a lot of research. Much appreciated!

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Response to SheltieLover (Original post)

Thu Dec 17, 2020, 08:34 PM

11. We bought a HomeSoap back in March. It's been great.

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Response to Native (Reply #11)

Thu Dec 17, 2020, 09:16 PM

19. Ty, Native

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Response to SheltieLover (Reply #19)

Fri Dec 18, 2020, 08:51 AM

22. It's amazing how much stuff can be crammed in there.

We can even fit our newspaper. I keep it right by the door to the house (garage entrance), and that's where I toss my credit cards, wallets keys, giasses, mail, etc.

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Response to Native (Reply #22)

Fri Dec 18, 2020, 09:45 AM

23. Awesome!

I was looking for a holiday gift for one of those folks who has absolutely everything. I think I will have to pass on the UVC device, but ty again!

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