UVC Light or Ozone as a Disinfectant?
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- Опубліковано 2 січ 2021
- In this video I test UVC light on a small scale to better understand its dynamics when used as a sterilizer. It turns out this has a lot of similarities to my current hobby of indoor plant growing. Honestly I am not surprised by how effective or ineffective it can be. The main take away is, do not be fooled by fake "UV" lights you might find online and also do not get a false sense of security when using a UVC lamp. There is limitations that are important to understand when it comes to using them.
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(Need to watch this one for comparison)
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As a microbiology graduate student, I can personally attest to the effectiveness of UV lights. Our Superpickle bio safety cabinet has one and we use it all the time to keep it sterile and sometimes for some of our dishes and tools prior to playing with our BSL-2 microbes. However, if used incorrectly, you can easily kill off the weaker microbes while allowing the more resilient ones to mutate and make unwanted results. Love your channel, watch it all the time!
Can it be used for sanitizing cosmetic packaging and supplies
When you refer to "Used incorrectly", what did you meant?
What would be the incorrect way to use it?
@@nataliebean4416 probably time exposure or set ups b4 the uv exposure/ turn on
I worked at a company that made biological products in the B2B space. The retards in the RG department left their product under the hood and someone thought they could turn the UV on with the product inside, which has DNA. Well not anymore.
What does this have in common with my cat waking me up last night? A single point of failure. Imagine any action, no matter how ridiculous, will happen once. My cat learned how to operate a door knob. An employee went and nuked hundreds of finished products.
Don't not do drugs kids.
I've seen tons of videos about it by bigger and more professional channels yet this is by far the best in giving the informations and results needed.. props man!
I modified an old microwave oven by removing the magnetron, transformer and fan and installing a UV bulb. This gave me an enclosed turntable with timer for sanitizing masks or other small items. Thought this might be handy for some of your experiments. I did this back in March when masks were hard to get.
Hey, you seem to know what you're doing. Can you please tell me if UVC lamps can burn objects at close distance? For example, i want to use the germicidal lamp in my bedroom but i don't know how far the objects must be. The bed made from fabric, the monitor screen from the computer, the mirror on the closet.. Will the UVC cause any problems for those objects?
Just want to add that nobody who doesn't know exactly what they're doing shouldn't even attempt this, microwaves are dangerous devices to mess with.
I have something similar.. I call it sunlight. Patent pending.
@@twentytwo138 quartz glass passes uv .. polished aluminum reflects it. Don't touch a potentially hot bulb to a surface.. other than that, go crazy.
that's a really good idea, well done. i never would have thought of it but it makes sense you can still use the control board even with the transformer unplugged because it mainly uses temperature sensors to shut down in case something goes wrong, so it's not really sensing what the load is, per se
My sister worked for an apartment management company. They liked to send her on move out inspections, since she has a rapid onset severe hay fever reaction to cannabis, and so they always knew someone had been smoking it (which was against their rental agreement, since it is still against federal law) if she came out with swollen, red, watery eyes and an itchy, runny nose, especially since she doesn't react like that to anything else. They would then need to run an ozone generator in the apartment before the next tenant could move in, and charged their previous tenant the associated fees for the clean up. My sister never had any further allergic reactions after they treated the space with ozone.
Sounds like an awful apartment management company, otherwise known as slumlords. You cannot make a decision if someone at somepoint smoked herb in the apartment based on sending someone with allergies in like a canary. That would never hold up in court and your company was probably taking advantage of less fortunate citizens who couldnt fight back.
I just wonder how she got that reaction from the beginning? 🤔 Like no human reacts to Urshiol the first time.
@@savagesarethebest7251 That's actually a false notion. Sometimes people are just allergic to things and will react, sometimes severely, to their very first exposure. That's why doctors want people to be so careful when introducing new foods to infants.
Also, my mother is severely allergic to it and has the same reaction. I am also allergic to it, though not as severely. It does give me massive sinus headaches, but my hay fever is way worse with wild grasses than with marijuana.
Thank you very much for the video! An incredible job is done by you. Unfortunately, there are very few such videos on UA-cam. Good luck with your further projects.
been using a lot of the info from your videos to grow a Superpickle and tomatoes. excited to see the videos you make this year.
Can't wait to grow some Superpickle this year! Thank you for all the insight!
Always nice when results support expectations. Refreshing like a fresh, crisp Superpickle
Hey Riley, how are you? I hope you are good. do you understand why it is obtained a result of 17min for the 2.5ft distance germ sample?
I mean, that result is obtained in function of the 5min/8inch experiment, right? I am a little confused and could use a little help to interpret those results.
Very interesting and informative, you covered the subject perfectly. Thank you!
This is exactly what I was looking for 👍🏼
Thank you for the knowledge
I came across some mushroom spore prints (superpickle strain). I wondered if I ran this uv-c light over the print, would it kill or mutate the spores?
Thanks for another incredibly informative video, superpickles and all.
Do you recommend using UVC or P3 to disinfect a superpickle ?
Been trying to grow a Superpickle for a while now any recommendations on how to get it to bloom?
Oooo! almost forgot about the superpickle - so glad I found my note, I was engrossed in the video.
Fun info...🎉 can't wait to see more of your content!
Cheers!
hey great ep just found your channel while looking for this specifically to decide on a small uv-c setup for my dishes, subbed!
dish washing machine with heat dry will do. Oven and microwave will do too ( don't need to have them baking hot ).
Thank you so much for producing this very useful and very important informative video.
Cool video.
Couple things:
The shadows cast from the rack from which your CFL was suspended almost certainly threw off your readings.
Ozone vs. UVC isn't a black and white comparison, it depends on factors such as the UVC source and the output of the ozone generator.
Thanks for the demo. is very useful for me because I am using to sanitize my homebrewing equipment. Thanks a million times
What UV wavelength bulb where you using
Youve got me putting mine on in my room for over 2 hours each time now.. Thanks
Why two hours? Most of the recommendations is 20 mins..should I up the time?
I didn't see this video in my subs, so it's a good thing I remembered about the Superpickle
Very nice and informative video! Subscribed!
This was a fantastic experiment, i really like this
Hey quick question. The UVC passover made at 3:55 is at a much lower height, and thus much higher intensity than the light kept for 1 min at 8 inches. I read that at increased heights, the intensity can drop by over 90%. Could this answer why the quick passover at short height did just as well as at height for 1 min?
Think of it like fire. If you passed your hand over a hot bed of coals at 1 inch and did it so that your hand was exposed to the heat for five seconds, do you think it would hurt? Or you could hold your hand at 3 feet from the coals for 30 minutes. What do you think would do more damage?
Can you make same test like exposing under uvc with that visual grown sample will they grow again or not
Actually this just never came to my mind. Now it's going crazy planning an automated disinfection of basically any stuff. Like it's on superpickle.
Great stuff. I learned a lot from your work.
General random question does a Aquarium uvc light submersible 11.6 x 3.7 x 1.7 inches penetrate plastic at a Distance 2 feet? Will it harm being around it ?
Uvc does not penetrate plastic. And it’s not good for any living thing to be near it when it’s on.
Why is everybody mentioning that Superpickle? Who's that? 🤣🤣🤣
same from here hahaha.
My concern with UVC sterilising plant tissue cultures I want to grow in polypropylene tubs is that UVC can “usually” only penetrate the top surface of whatever media it hits, it can’t pass through Plastic or glass and it struggles to pass through almost anything including water and medias etc so I wonder if a UVC bulb would be more effective if it was submerged in the medium while it was being mixed somehow so the media passes close by the light as it mixes and hits the light more often, the same principal used in aquarium UVC filters to kill bacteria and algae blooms 🤔
Does it help get rid of Superpickles??
Hi, im just curious cause im planning to make a purifier with uv installed, can reflected UVlight from the bulb itself still works? like putting mirror and deflect it to some parts
Well there are two problems with that. One, is reflecting light is added distance from the source which reduces how effective it is. Two, is if there is any coating, plastic or glass over the reflective source then it filters out the UVC. Many materials absorb it. Any mirror is going to filter the reflected light because it’s glass. Unless maybe it’s a first surface mirror, but I’m not sure.
@@GrowingAnswers ok ty so much for the info
Love your channel as it is so unique compared to all of the other UA-cam growing channels. Here's to a better 2021 which, hopefully, won't be a SUPERPICKLE like 2020.
Would it not purify the air at all To set it up on ceiling like you did? I was considering putting uvc on top of cabinet (no direct light except for air) Would this be safe to leave on and would it help purify air?
If you put a UV light inside of something that moves air such as a tube with a fan blowing air through it then yes it would sanitize the air. But if the air is moving too fast past the light it would be less effective. You would also want the tube to be only about an inch or two larger than the light to keep the air in closer proximity to the light.
Thank you sir, but is the UVC light affected ? is it good for kids at home and do clean the rooms from this ugly dirty things ?? please advise
I'll check your channel but may I ask:
Have you tried ozone in the water to see how that works as a plant disinfectant?
How harsh is ozone, gas or in water, on leaves?
It does work in water, but my assumption is that it will cause harm to the plant. Microbes in solution and on roots are both harmful and beneficial. No way to target just the harmful ones.
I have a 60W UVc light. When I have it turned on for one hour in the room, it creates an sulfur like odor. Is that odor an indication of the presence of ozone. I know the UVc can kills viruses. But does the Ozone also kill viruses. Should I keep my windows closed so that the ozone can kill the viruses effectively?
The ozone also kills viruses. But ozone is not a sulphur smell. When uvc reacts with materials or skin it can create those kinds of odors. That’s one way to know it’s working.
Thanks so much for your channel. It’s very helpful. Can you create a comparison between normal ozone machines and UVC ozone machines? Enerzen markets UVC ozone machines as the ones that can actually kill bacteria, while their 0-555/0-777 line doesn’t kill bacteria because it doesn’t have that UVC bulb. It would be interesting getting a comparison between these
Ozone will definitely kill bacteria. But UV does it a lot faster.
So how long do you run the ozone unit to disinfect the 3x3 tent?
10-20min tops
Ok we are SuperPickle day January 3rd 2021.It would be perfect for my place.Thank you for the generosity!!!:o)
Awesome video man! Very very good.
Btw, it must be kinda weird to touch with ur hands a petri dish
Nice systematic breakdown of the effect of distance on uv -c would be good to have the formula
Great video & incredibly interesting results! Superpickle
Nice Superpickle video good info happy new year
Awesome video SUPERPICKLE 🥳
How long to wait for UV light sanitizer without ozone to re turn to room to be safe?
If there is no ozone why would the room not be safe the second you turn the light off?
Hope you can answer this.
I had a pollen outbreak in my 4'x2'x5'ft high grow tent. I bought a similar light to yours (8w) to try and kill all the pollen. The light is hanging at about 4 feet high. I set the timer for 60 minutes. I'm going to do this a few times but I'm curious what you would do? Is what I'm doing going to be enough. My grow lights and fans etc. were covered in pollen. Nice video btw.
Water deactivates pollen. Use a sprayer
@@GrowingAnswers Thank you
The contaminations you collected could be coming from the air since you're not working in a sterile area. Therefore, how long it took you to collect the spores could be the bigger factor for how much contamination you got than how effective the sterilization was.
No. I ran controls multiple times leaving Petrie dishes in open air for the same time that I collected bacteria and transferred directly to the other petri dishes. I never once had any growth on a petri dish unless it was touched with some thing. This is shown In the other videos in the series.
What is the watt of the UV light you used on this experiment?
6
Great demonstration, thank you. I picked up a few UV mercury lamps over 20 years ago. They were part of a homemade EPROM erasing device. Each lamp came with a ballast and a quartz tube cover. I'm not sure what band mine are radiating in but it looks greenish blue like yours. The only difference is mine produce noticeable ozone with only a few seconds of operation. You are saying your lamps don't produce the ozone smell?
No not the one I have
@@GrowingAnswers but but... UV-C will always cause ozone.. it breaks down and is rearranging molecules and some of them turns to O3 aka ozone
Edit: apparently you can tune the wavelength so that no ozone is being produced
I noticed during the segment of the tests that involve using the rack to suspend the bulb, there was some shadows cast by the rungs underneath the bulb. I wonder if that had any effect.
Anyway, excellent video!
So are the near-uv lights junk then?
I absolutely love your superpickle videos. Thank you for what you do!
I love your videos and Superpickle!
Such a very well made video with proper testing and detailed information. Do you think those UVC lamps with ozone are good, and do they produce enough ozone to be effective? The UVC lamp i have is 65w and i use it for 30-60 minutes, it takes many hours for the ozone smell to disappear even with an open window. Is this a good indication there's enough ozone to sanitize every nook and cranny? And also, does the ozone really damage electronics and wires? Sometimes i turn on the AC unit while there's ozone to sanitize the AC as well, hopefully that's alright.
The ozone is probably enough to kill most micro organisms, but probably not enough to work on established mold, mildew, or fungus.
can it kill canine distemper virus?
I read in the comment section of another video that the most efficient lighting for an indoor Superpickle grow is to use gu10 style bulbs with a 40 degree beam angle. They said the focal lens helps big time. This sound plausible to you?
40 degrees? That’s a really tight hotspot. That’s more of a specific use/situation. Might get light burn too.
@@GrowingAnswers just to be clear we're talking about a diy array of several bulbs. The numbers he threw out were 50,000 lux over a 3x4 area at 100w. The bulbs have posts that stick straight out the back that look easy to solder to. I don't even know how those numbers compare to the marshydro lights I'm just starting to research this stuff.
What if UV C reflection with mirror, will it kill viruses ?
It would have to be a first surface mirror. And that still adds to the inverse square law.
1st of all, Superpickle. Thanks for making these vids. Would you like some of my powdery mildew to test efficacy of ozone and UVC? lol I'm trying UVC to help keep it in check.
Superpickle, thank for the great videos.
Excelent experiment!
What is the expression that you use to calculate those times? I mean it is based on the ligth fluence(radiant exposure) right?
It comes down to light intensity (watts and proximity) and time. Double the distance from the initial test and you reduce the intensity by a factor of 4 and the time scales in linear with that.
@@GrowingAnswers Something like => Time = K*(light intensity)/(distance^2) ; or a similar expression?
@@eliomarconde3146 honestly I don’t use complex equations like that. But that seems about right. You can find inverse square law equations online that would be suitable for that. With uvc being such high energy photons, an equation won’t necessarily translate to real world use in ever instance.
@@GrowingAnswers ahhh ok ok thanks for the tip! I appreciate that
@@GrowingAnswers i am trying to do the calculation wtih the inverse square law that you told me. But I don't get the same result. Could give an example of what expression/values did you use?
Very cool.
Was wondering how UVC light would work on water?
This is all interesting BUT not being a student of microbiology how does this all work out with different power levels of lights? You're using a 6 watt light so what happens with a 38 watt light - a 55 watt light - a 100 watt light?
The standard time is 5-15 minutes and then ventilate the room because Ozone is dangerous.
So we need to figure out the distance that is required to get sterilization between 5minutes and 15 minutes.
I think only safe UVC light for skin eyes and no ozone is FAR UVC light Very expensive . When tested uvc light in a bedroom closed door with remote plug in on timer for 1 hour . I aired room out a few hours because smelled strong ozone smell .
I was using 2 F30T8 UVC Fluorescent tubes in a shop light fixture to kill dust mites . Don’t
know if it worked but just a experiment . The UVC light will burn skin similar to sunburn in a few seconds with large light as I was using .
Does Ozone or UVC cause fading in room paint, furniture fabrics and curtains
Not that I’ve heard of.
Great report!
There are also 185 nm UVD lamps that produce ozone as a by-product, dunno if it's better than only using UVC light / ozone?
Also I think UV/ozone would cause plastics/fabrics to deteriorate faster?
Ozone in high concentrations can eat away at certain plastics and rubber type materials. Uvc in closer proximity will do it faster than ozone.
Great video thanks for sharing
I thought for sure the word was gonna be Marypickle, and just about died laughing when it was Superpickle
Ozone is heavily dependent on humidity as well?
Probably, but averaging 50% humidity is where it’s going to be most used.
But what about the superpickle tho
How does a UVC lamp disinfect makeup products? Does it actually work?
Only works on surfaces.
Thank you so much 👌👌👌👌👌👌👍👍👍👍👍👍👍👏👏👏👏👏👏👏👏🙏🙏🙏🙏🙏🙏🙏🙏
You could grow some super awesome superpickle with that!
Which is better uv led or uv tube
UV LEDs are a joke
Uh oh How would you use it incorrectly? We are thinking of getting UVLizer lamps for in our home. Also, I hear ozone makes clothes smell funny, so what about carpets and couches, etc? How do then get the smell out. Why does it smell?
The smell only lasts a short time.
What about a Superpickle??
Great instructional video
Dear Growing Answers
I love this lesson and used your link, but your unit is not available. I want a unit that I can use
to disinfect computer keyboards that gross me out.
The units still available produce Ozone... Amazon U/V/C Light Lamp 185nm with 253.7nm Bulb 5ft Cord and Plug 110V (6W Ozone Lamp)
Do I have to worry about using this lamp because of the ozone, for just a couple of minutes?
A couple of passes once a day is all I really need.
Thanks so very much!
Signed
The Lysol Cootie Killer with dishpan hands
Thank you for letting me know. I added a link for the same light that is currently available but it produces ozone. I imagine the amount of ozone it produces isn’t that much unless it was contained in a box. You will probably notice it when you use it but I don’t believe it will be enough to cause any worry. If you notice the odor and it doesn’t irritate your nose or become unbearable as an odor, then it probably isn’t going to cause any harm and certainly not for the short time that you would use it. Something small like that isn’t going to produce a large quantity of ozone and the ozone amount it produces only works most effectively over a long period of time and only in smaller enclosed spaces. I probably would have used it myself too, but for this experiment it was important that I didn’t influence it with Ozone. That’s why I did not get the Ozone version
@@GrowingAnswersThanks so much for getting back to me. I appreciate it.
Well, this is a relief. I know the unit is small, but then there is danger in most everything. Best to know the tools we work with.
Can you tell me how long can I safely run the unit?
I saw one video that said this small size is good for a 10 x 10 room.
Again, thanks so much
@@momzilla9491 The amount of ozone it puts off would likely be ok for a 10x10 if it ran continuously and the room had no ventilation at all. So it’s not practical for ozone use since you don’t want to be breathing ozone constantly. If you have hvac or an open door to a 10x10 room then the ozone it puts out will be basically useless. Maybe for a small amount of odor control only. As far as the UV light….no. It won’t do much of anything in a 10x10. It needs to be within 3ft of the surface you wish to decontaminate over a time period. Or within an inch if you want to sterilize instantly.
@@GrowingAnswers Ok, so rooms 10 x 10 that I can close off, and turn off any ventilation - as far as ozone goes. This will be great for bathrooms, lockers then along with my computers! Thanks again! This is good news.
Now something for your tool chest!...
I've been making Colloidal Silver for about 10 years. It will work on mold etc if you spray directly and isn't harmful for plants, or people who are not allergic to silver, even internally.
My son's friend was raped at the beginning of this pandemic and contracted HIV. It knocked the virus down in no time to almost zero.
Spoke to my urologist about it and he has patients using it successfully for bladder infections instead of, or with antibiotics.
It's not hard to make your own, and this stuff can stay in a plastic spray bottle for years and never smells of anything other than fresh water.
Storage is different for medicinal purpose and can't be ignored.
Happy New Year!
@@momzilla9491 I’m aware of it. Also, if you want ozone, using a uv lamp of that size is not an effective or efficient way to do it. Just get an ozone generator for ozone. Or a much larger uv lamp that emits ozone. Either way you shouldn’t use it while being in an area.
Does one find a SUPERPICKLE in UK
Can we see a powdery mildew experiment? Pls?
Very very interesting. I watched till the and, also the other video about ozone. That uvc light would be killer to make a little sterilization box for masks and other stuff like that. With Mylar walls also better
How do how did you know the light wouldn’t make ozone?
First of all it is marketed that is doesn't. Second, You would easily and immediately be able to smell it.
Yeah but is is effective on superpickles?
Love your show! Hope I won! 😝
May I ask u to make...an experiment with (for example) red basil in white light and in red/blue light?
I think it would be interesting...to know if pigments change their way to grow
That’s actually a decent idea. I have researched red leaf plants actually. It will be on my list at some point. I don’t have any RB lights anymore though. Kind of phased out now.
@@GrowingAnswers cool. Cause I have red basil and I don't know if some green spots are totally normal or are caused by my RB light. It's fascinating
can you test larq bottle pls
What is the absolute best light to get the big bang, heavy buds. Just the best light over all. And how about Alibaba lights
Alibaba lights 😂🤣😭 is u serious?
@@HASSPREDIGER20 have you looked at the stats? I ask questions not to be made fun of .. But still much love to you because that's what I got to offer.
UVA and UVB for growing. UVC will kill vegetation. Mars hydro sp3000 has UVA and IR lighting. Pretty awesome light with full spectrum for large dense flower.
@@johnnypoe3965 Bro the last thing you should be stingy & cheap with when you grow is the light. Your grow stands and falls with the light, trust me you won’t get proper results with a cheap Noname China light from alibaba. If you don’t want to buy to expensive led lights buy some from mars hydro, but don’t waste your money on alibaba lights, trust me if you do so u will regret it
@@HASSPREDIGER20 I understand, just thought you were laughing at me for not having enough knowledge about them, sorry about that.
Superpickle. They are the best! Great video btw.
Nice Suoerpickle man!
Is UVC light bad for organic material? Because i need to find a way to disinfect the SUPERPICKLES I grow indoors at the moment.
Btw love the video!
Germicidal UVC lamps like the one used in this video will damage organic material. It works by breaking down the DNA of the organism so I wouldn't use it on anything living, plants included.
Question: "If we were to take UVC and put it over something for 24+ hours, would they all eventually be sterilized?"
it only takes a short time. depends on distance though. I guess if it were 10ft away then 24 hours would likely be enough. with this size light anyway.
Good stuff!!!
That UVC light also generates ozone! Others generate even more, others none. It depends on the spectrum nm. I have that same light and it has a small spike in 185nm that generates enough ozone that I need to ventilate the area after use because of the strong smell. So it's a double action in comparison to just ozone, especially if you have a big bulb with high wattage.
The light in the video does not generate any Ozone. It makes absolutely no smell. The link in the description is for one that generates ozone because the one that I used is no longer available.
Yeah you can buy them with or witout ozone
How long do you have to wait for ozone to dissipate? Is opening the windows enough?
@@Dr_Lucozade It depends on airflow. If there is enough of it, it dissipates in a couple of minutes. If you only open a window, even if there is high airflow outside, it will take a while until you stop sensing it. If your option is only a window then use a fan and make sure you use it with thermodynamics in mind: If the temperature in the room is higher than outside, then the hot air of the room will go toward outside only through the upper-half part of the window (the lower half is where the cold air will get into the room), so place the fan to blow out of the windows through the upper side. And vise-versa if the temperature of the room is lower than out. This way the replacement of the atmosphere of your room will happen way faster.
I have grown the most amazing pickles of the super-kind with your advice. Please do send us more advice for large Superpickles of the future. I will worship my prizes superpickle or not
10 months ago I started with UVC. Now I use 100 to 300 watts in a room. The lamps prices are dirt cheap now. It is so much better to disinfect with a few hundred watts, the process is more thorough.
I'm probably waay too late with this but here is my entry! SUPERPICKLE
Already run a conbernation of leds including if as well helps them look like Superpickle rick.