The above Ad will no longer appear after you Sign Up for Free!

Get your UV right! - Skin / Eye damage from UV-C

Discussion in 'Safety' started by EdSavoie, Nov 13, 2017.

  1. EdSavoie

    EdSavoie Well-Known Member

    Messages:
    466
    Likes Received:
    194
    Occupation:
    College Student
    Location:
    Windsor, ON, Canada
    News Article



    Thought this would be worthwhile to put up.

    Those in attendance at an event in Hong Kong were left with skin and eye damage after (blame unclear) a contractor used UV-C band tubes.

    The running theory is that someone unaware of the different UV bands selected the UV-C tubes because the lack of dark glass and phosphor makes an admittedly nice effect.

    For those who are unaware, there are three main UV bands that lights come in.

    UV-A : This is the kind you want. ("BLB") class tubes fall into this category, coated in black glass.
    ("BL") class tubes have white phosphor-coated glass, and intended to attract insects, though they can work for blacklight purposes...

    UV-B : This is going into burn territory, please don't use these tubes. (Though it could be worse.)
    Tanning bed lamps, despite producing 95% UV-A still pump out about 5% UV-B and thus should be avoided.

    UV-C : Germicidal tubes.
    Very bad, this is what the above linked event made the mistake of using.
     
    JD, mikefellh and RonHebbard like this.
  2. bobgaggle

    bobgaggle Well-Known Member

    Messages:
    649
    Likes Received:
    194
    Occupation:
    Shop Foreman
    Location:
    Philadelphia, PA
    just, wow.
     
  3. JD

    JD Well-Known Member

    Messages:
    3,968
    Likes Received:
    1,159
    Location:
    North Wales PA
    I was going to say (but you covered it later),
    "What, were they trying to disinfect the crowd?"
    UV-C's are used in water purification systems (and many other disinfecting systems) to kill organisms. Unfortunately, we ARE organisms! (Admittedly, rather large ones ;) )
    PS: Love BigClive! His videos are educational (most times) and always quite funny!
     
    RonHebbard likes this.
  4. EdSavoie

    EdSavoie Well-Known Member

    Messages:
    466
    Likes Received:
    194
    Occupation:
    College Student
    Location:
    Windsor, ON, Canada

    Relevant new video from Clive
     
    TNasty, mikefellh, JD and 2 others like this.
  5. cbrandt

    cbrandt Well-Known Member

    Messages:
    441
    Likes Received:
    106
    Location:
    Michigan
    I'd forgotten about this post. I was listening to a couple month old Science Friday article about some research that was done showing that it is safe to use UV-C to combat flu in public areas. I wonder if they're using a different intensity or wavelength

    Science Friday - UV-C
     
    RonHebbard likes this.
  6. EdSavoie

    EdSavoie Well-Known Member

    Messages:
    466
    Likes Received:
    194
    Occupation:
    College Student
    Location:
    Windsor, ON, Canada
    Interesting, though I've got a million alarm bells going off...

    First off, this doesn't address that the UV-C bulbs produce ozone, which in a ventilated room isn't a huge issue (perhaps this specific wavelength doesn't do that?)

    Someone with eye problems, ie: dry eyes, could forSEEably have issues. Anyone with an open cut would have that inner layer of flesh in that area nuked (Although it would be sanitized.)
     
    RonHebbard likes this.
  7. JD

    JD Well-Known Member

    Messages:
    3,968
    Likes Received:
    1,159
    Location:
    North Wales PA
    Would have some concerns. If you block the light so it isn't hitting anybody, you still have the ozone issue. Ozone breaks down real fast, so I could see it being used to disinfect public areas while they are not in use, but once people are there, I can't see them being used. Something outside of that wavelength would not be effective killing things. In using that wavelength, we must remember we are one of those "things."
     
    RonHebbard likes this.
  8. StradivariusBone

    StradivariusBone Well-Known Member Fight Leukemia

    Messages:
    1,073
    Likes Received:
    375
    Occupation:
    Facility Manager/TD
    Location:
    Space Coast, FL
    Saw on reddit the other day someone posting a unit that is used to disinfect hospital rooms, so it is commercially viable on a large scale. It seemed like the room was cordoned off while the machine did its thing. Your comment on ozone reminded me of the air purifiers that were all the rage a few years back with ozone generators built in. I thought it was stupid since ozone is harmful to inhale and pairing it with a device that is designed to purify your air seemed a bit counterproductive.
     
    RonHebbard likes this.
  9. mikefellh

    mikefellh Active Member

    Messages:
    113
    Likes Received:
    28
    Location:
    Toronto, Canada
    [​IMG]
     
    StradivariusBone likes this.
  10. JD

    JD Well-Known Member

    Messages:
    3,968
    Likes Received:
    1,159
    Location:
    North Wales PA
    Yikes!! Well, I hope that thing is turned on by remote and outside of the room! Also hope the photographer was shooting through a window. So much UV and Ozone, it looks like a human bug zapper!
     
    RonHebbard likes this.
  11. mikefellh

    mikefellh Active Member

    Messages:
    113
    Likes Received:
    28
    Location:
    Toronto, Canada
    Here's one you can buy for sanitizing smartphones (they say phones are dirtier than a toilet)...the lights don't actually come on until you close the lid (opposite of a fridge), and stays on for 10 minutes:
    [​IMG]

    There are also UV sanitizers for toothbrushes:
    [​IMG]
     
    StradivariusBone and RonHebbard like this.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice