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Offlinenickchinn
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Registered: 05/15/21
Posts: 21
Last seen: 7 hours, 59 minutes
Anyone use UV-C for sterilization?
    #28615994 - 01/10/24 05:47 AM (17 days, 21 hours ago)

Probably posted before, looked around. I found a UV-C light on major online retailer (A-Z). Aparently these C wave black lights will kill fungal spores, viruses, bacteria. It interrupts DNA. As a HVAC tech. We sometimes install these lights in large units at hospitals in the air supply, but I ways thought it was a placebo to upcharge contractors. Since it’s $17 with a 4.7⭐️ at 1160 reviews, I feel like it worth turning on and leaving for 10 minutes in my work area. Some guy in the reviews said he tested it on his N95 masks and it works.

Anyone try this, or have honest feedback?


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OfflineSilentraindrops
mushlove student
I'm a teapot
Registered: 12/23/23
Posts: 222
Loc: pnw
Last seen: 3 hours, 19 minutes
Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28615996 - 01/10/24 05:53 AM (17 days, 21 hours ago)

You are asking a question about uv light , that you basically answered lol .

UV exposer can do damage do not work under it.

Cleaning you area isn't going to stop the bacteria in the air when you move....

LOTS of people us uv to sterilize but you can do that with many other methods too... I've used uv to sterilize other things but not my SaB , it's not really a "sterile" air box and keeping it that way would be meh.
It depends on what area/ what you are doing ?


--------------------


Edited by Silentraindrops (01/10/24 06:01 AM)


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Offlinenickchinn
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Registered: 05/15/21
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Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28616004 - 01/10/24 06:17 AM (17 days, 21 hours ago)

I wouldn’t work under it. Like it claims, interrupts dna. My work area and grow area are in my walk in closet. I thought about mounting it to wall above my SAB. Turning on and walking away for 10 minutes. Then spraying down myself with alcohol like usual and turning off before I go in. At least killing a significant amount of spores prior to me walking in. I know it works. What I’m asking is: are home UV-C tube lights powerful enough to do this? $17? Before I stumbled on this I assumed a UV light powerful enough to sterilize an area is something you’d have to buy commercially. Just wondering if others have had success with this


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OfflinePscientist
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Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28616009 - 01/10/24 06:26 AM (17 days, 20 hours ago)

Some modern lab equipment will come with these installed to sanitize the work surface. The usage protocol is to turn the light on for 15 minutes before and after work but not to work with it on. UV light can be damaging to your eyes as well as your DNA.



--------------------
Any information posted on this website from this account is hypothetical and only to be used for legal purposes. :super:


Edited by Pscientist (01/10/24 02:14 PM)


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OfflineRoscoeReturnsS
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Re: Anyone use UV-C for sterilization? [Re: Pscientist] * 3
    #28616224 - 01/10/24 10:35 AM (17 days, 16 hours ago)

No no no, please no. Stop with the UV lights. Everything that needs to be sterile goes through the PC. UV light damages skin, retinas, almost all plastic and rubber. In addition, it will not work anywhere there is a shadow, so any stuff in your closet or dirt or really anything that will block the light renders this whole thing useless. You are drastically raising your risk level for absolutely no benefit.

Also stop dousing yourself with iso. Not necessary.

Lab equipment companies still sell UV in their hoods as a way to make money. Most labs I worked in stopped using UV years ago because of the dangers of UV coupled with the ineffectiveness in actual use conditions.


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InvisibleWay
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Registered: 01/14/23
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Re: Anyone use UV-C for sterilization? [Re: RoscoeReturns]
    #28616304 - 01/10/24 11:49 AM (17 days, 15 hours ago)



--------------------

That's the way she goes, boys. Sometimes she goes, sometimes she doesn't, cause that's the fuckin way she goes.


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Invisiblestarvinghooker
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Registered: 04/16/23
Posts: 533
Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28616338 - 01/10/24 12:22 PM (17 days, 14 hours ago)

Whether of not you are able to sterilize 100% of everything inside an SAB would make no difference.  Eventually, you're going go be introducing contams on whatever you place in the box (your hands, tools, etc.) Abd the moment you take everything out of your box it's as if the light was never there.  It's complete and totally unnecessary overkill.


--------------------
Grab life by the balls and yank on 'em til everything you want comes gushing out in thick, creamy ribbons

Noob like me? Start here!
Hitchhiker's Guide to the Shroomery



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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:


--------------------
:mushroomgrow:
🆃🄴🅰🄼  🅲🄻🅸🄽🅶🅆🆁🄰🅿

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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OfflinePscientist
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Re: Anyone use UV-C for sterilization? [Re: RoscoeReturns]
    #28616368 - 01/10/24 12:43 PM (17 days, 14 hours ago)

Quote:

RoscoeReturns said:
No no no, please no. Stop with the UV lights. Everything that needs to be sterile goes through the PC. UV light damages skin, retinas, almost all plastic and rubber. In addition, it will not work anywhere there is a shadow, so any stuff in your closet or dirt or really anything that will block the light renders this whole thing useless. You are drastically raising your risk level for absolutely no benefit.

Also stop dousing yourself with iso. Not necessary.

Lab equipment companies still sell UV in their hoods as a way to make money. Most labs I worked in stopped using UV years ago because of the dangers of UV coupled with the ineffectiveness in actual use conditions.





There is a difference between sterilization and disinfection of a surface! They are not interchangeable.

Sterilization of equipment (where appropriate and possible) is good, sterilization in combination with a disinfected/decontmainated surface is better.

I never claimed UV can replace sterilization, but it helps create a cleaner work environment.


--------------------
Any information posted on this website from this account is hypothetical and only to be used for legal purposes. :super:


Edited by Pscientist (01/10/24 01:09 PM)


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OfflineRoscoeReturnsS
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Re: Anyone use UV-C for sterilization? [Re: Pscientist] * 1
    #28616729 - 01/10/24 06:33 PM (17 days, 8 hours ago)

Quote:

Pscientist said:

There is a difference between sterilization and disinfection of a surface! They are not interchangeable.

Sterilization of equipment (where appropriate and possible) is good, sterilization in combination with a disinfected/decontmainated surface is better.

I never claimed UV can replace sterilization, but it helps create a cleaner work environment.




Yes you are correct. Sterilization and disinfection are different. They are not interchangeable. My response was not directed at your comment except for the last regarding UV in hoods.

UV does not work for our purposes and poses a very real risk that many discount. Just because it looks cool in a lab catalog does not mean we should be putting these things in our closet.


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Offlinenickchinn
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Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28619998 - 01/13/24 04:41 PM (14 days, 10 hours ago)

What I have researched, and I may be totally wrong, is a two step process.

step 1: UV-C light that produces O3 (OZONE) in the area on for 15-30 minutes [turning on outside of area to prevent exposure] killing and sanitizing everything in direct light as well as the OZONE killing everything in the shadows and underneath tables etc that can be "wafted up" or "stirred up" in the air just from movements.

step 2: UV-C light OZONE free that destroys OZONE [turning on for 30 minutes after step 1 light is turned off]. This returns the air to normal conditions so the individual can work without respiratory irritation.

This is simply a $17 addition to my new grow area. My previous work area was where ever I had space; computer desk, bathroom, kitchen island, etc. As an on and off grower since 2010, I've had many frustrating contams that just ruined everything.

Now that I've moved and have a walk in closet with my own personal space for my extracurricular activity, I want it to be clean, easy, and effective.

But most importantly "mad scientist" like fun, this is a hobby! :smile: so go big!

My Room plan:

Two single pole/single throw toggle switches (or simply home depot normal light switches) wired to the two UV-C lamps on ceiling and installed light switch height outside the closet next to door. One for each light. Red LEDs installed above each switch indicating which light is currently on. both switches will be additionally wired to a "Soviet Era" warning lamp likened to something in Chernobyl and a warning sign on door .

As an HVAC Installation, Service and Repair Technician, I have the skill and materials I need to wire this awesome "mad scientist lab", save the warning sign and lamp.

I also have installed these UV-C lights inside major air handling units in hospitals, military barracks, hotels, office buildings. Just about anywhere there are multiple rooms that share centralized air and the potential for stagnant humidity and moisture. The return portion of HVAC recycles the air through filters (the ones at walmart you always forget to replace every three months and I have to explain the importance of them) and in many cases, we have installed tubular UV-C lights after the filters to kill *ahem* MOLD SPORES small enough to pass through dust filters, before sending the climatized air back through the building. I wanted to empathize that I am not ignorant to this, I have not used this type of disinfectant procedure on a small level for personal use. $17 and an extra 45 minutes wait before walking into work area to me sounds worth it. I was just curious if anyone has had good results using this.


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OfflineHappinessStan
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Re: Anyone use UV-C for sterilization? [Re: Silentraindrops]
    #28620010 - 01/13/24 05:10 PM (14 days, 10 hours ago)

Quote:

Silentraindrops said:
You are asking a question about uv light , that you basically answered lol .

UV exposer can do damage do not work under it.

Cleaning you area isn't going to stop the bacteria in the air when you move....

LOTS of people us uv to sterilize but you can do that with many other methods too... I've used uv to sterilize other things but not my SaB , it's not really a "sterile" air box and keeping it that way would be meh.
It depends on what area/ what you are doing ?



I used to work in aquatics, some dude came in and asked for a uvc light for his aquarium, my boss assumed he meant a uvc light for his uv steriliser (a contained water filter that kills pathogens and parasites with uvc light). Turned out he meant a uv light for his saltwater tank.
Plugged it in, worked fine, so he started working on cleaning out his tank. Ended up with 3rd degree burns all over his face and arms after less than an hour.
Luckily, he realised it was his fault for not specifying which bulb he needed. That could've ended in a very heavy lawsuit.
Tldr; don't fuck about with uvc.


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InvisibleNillion
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Registered: 04/14/22
Posts: 1,000
Loc: Terra Firma
Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28620015 - 01/13/24 05:14 PM (14 days, 10 hours ago)

Effect of ultraviolet C irradiation on growth and antibacterial activity of Fomitopsis betulina

Exposure of Trichoderma isolates to different doses of UV radiation for development of mutants and their stability in subsequent generations

Edible and medicinal fungi breeding techniques, a review: Current status and future prospects

SANITATION OF MUSHROOM (AGARICUS BISPORUS) WITH UV-C LIGHT

Effect of light on quality of preharvest and postharvest edible mushrooms and its action mechanism: A review

_____________

These are all titles of articles that may interest people in relation to this topic.

UV-C light is a mutagenic agent in many fungi, it has more promise in relation to breeding than it does in terms of sterilization. That's an advanced topic though and there really isn't much call for its use in the growing of sacred fungi. For those using it as a mutagenic agent a simple handheld wand is effective, but it's tricky to use. I won't share the basic methods but they can be found by searching online. It also has some uses when it comes to plants. I use it on cactus seedlings, for example. I also wear glasses that block UV light and avoid exposing my skin to the light when working with it.


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OfflineHelloImBob
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Registered: 03/30/08
Posts: 219
Last seen: 2 hours, 38 minutes
Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28620049 - 01/13/24 05:48 PM (14 days, 9 hours ago)

So why not install a couple lights in your HVAC system on the other side of your filter so you lights don't get dirty? To remain on at all times and purify the air as is passes by the lights just be sure to shield your filter from light so it doesn't get destroyed

I think I'm running a couple 24w uvc in the HVAC

Uvc can make silicone crumble after less than a year as well, makeshift fishtank parasite killer/oxengenator. Be careful dangerous in lots of ways not just eye damage, lung damage ect

It creates ozone and hits pollen spores ECT with so much energy it knocks DNA out of place and replaces it with different molecules or whatever

O3 ozone is very unstable so as long as it gets tumbled around in the air for awhile it becomes 02 and isn't in high concentrations it isn't dangerous but it can be very very bad if used incorrectly

It can smell like chlorine and burn your lungs after it's been turned off it can destroy plastic in minutes, leave it black at the very least

They aren't going to fix your problems or maybe help much for mushrooms but they can keep the over all air cleaner

It can only clean a surface and destroy that surface if it's not resistant to it so it's almost useless for mushrooms, that's what alcohol or a flame or PC is for on most things

In a SAB if the light isn't blocked will turn your tub black

If you don't know what your doing and you just install for a company without knowledge of uvc please stay away from it before you do unrepairable damage to yourself

It's more useful in things like a fish tank with clear water where you can't use chemicals or heat to kill parasites or to oxidize ammonia

Just using the basic mycology tools will lead to way more success than trying to use something you don't fully understand

Please please stay away from it if you have to ask about it instead of understanding how it works and the dangers associated with it

They have lots of space in a store a few low power light bulbs isn't going to be dangerous like it could be at home


--------------------
Quote from Stipe-n-Cap

"You appear to be talking about boosting tryptamine content in mycelium by amending LC with....whatever your amendments are. I have to say I'm a tad disappointed that you're addressing us with the shorthand of a 13 yo girl who's texting her besty for make-up tips, instead of proper English, which causes me to have doubts."


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Offlinenickchinn
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Registered: 05/15/21
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Re: Anyone use UV-C for sterilization? [Re: nickchinn] * 1
    #28620832 - 01/14/24 11:03 AM (13 days, 16 hours ago)

I install it where the blueprints tell me. I’m not an architectural engineer by no means. I appreciate the attack on my trade as well. That is why I am here asking the question. I have installed it based on plans that have been approved by the government and hospital boards. To kill mold spores that pass through filters, and thought it would be a beneficial idea to my home setup. A simple yes it works or I haven’t seen any results would have been fine HelloImBob. “Please please stay away from it if you have to ask about it instead of understanding how it works and the dangers associated with it” if that is your philosophy on life, then maybe you shouldn’t go to advanced or auto zone and ask for help with replacing spark plugs. If you don’t understand it, just shut up and do what you know? How about you don’t discourage expansion of knowledge and learning new things. I’ll take your advice and next time I have to go to a house with a owner that has your type of attitude, I’ll say, “I can’t do it, I don’t understand and shouldn’t ask questions!” Literally, telling me to not educate myself and ask questions was pretty shitty.


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InvisibleNillion
Nobody

Registered: 04/14/22
Posts: 1,000
Loc: Terra Firma
Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28620845 - 01/14/24 11:09 AM (13 days, 16 hours ago)

It works and most UV-C lights don't create enough ozone to be a big problem. Hospitals use the lights and there doesn't seem to be ozone related health issues associated with working in a hospital.

In fact, when someone is harmed from ozone poisoning they go to a hospital for treatment where UV-C units are common and they recover just fine.

It's also useful for niche applications as a mutagenic agent as mentioned.

It may not offer distinct advantages for cultivators who already have excellent technique or a laminar flow hood.


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OfflineHelloImBob
Old Guy
I'm a teapot
Registered: 03/30/08
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Last seen: 2 hours, 38 minutes
Re: Anyone use UV-C for sterilization? [Re: nickchinn]
    #28620932 - 01/14/24 12:08 PM (13 days, 15 hours ago)

Quote:

nickchinn said:
I install it where the blueprints tell me. I’m not an architectural engineer by no means. I appreciate the attack on my trade as well. That is why I am here asking the question. I have installed it based on plans that have been approved by the government and hospital boards. To kill mold spores that pass through filters, and thought it would be a beneficial idea to my home setup. A simple yes it works or I haven’t seen any results would have been fine HelloImBob. “Please please stay away from it if you have to ask about it instead of understanding how it works and the dangers associated with it” if that is your philosophy on life, then maybe you shouldn’t go to advanced or auto zone and ask for help with replacing spark plugs. If you don’t understand it, just shut up and do what you know? How about you don’t discourage expansion of knowledge and learning new things. I’ll take your advice and next time I have to go to a house with a owner that has your type of attitude, I’ll say, “I can’t do it, I don’t understand and shouldn’t ask questions!” Literally, telling me to not educate myself and ask questions was pretty shitty.




Lol wow I'm sorry I didn't realize I was talking to a little girl on her period who obviously doesn't understand what I'm saying

You sound like one of those kids who has never been told no and just starts throwing a fit instead of asking for better understanding

Some things aren't meant to be toys

Some things do not belong in this hobby except for very special cases if that

I'm all about creative solutions and learning or I wouldn't have bothered replying. I could have just laughed to myself and said some kid is gonna play around with uv-c hahaha

I have another idea let's all replace our lightbulbs with tanning bulbs

Uv-c is amazing but it's mainly for special purposes, outside of those purposes it can be very dangerous to somebody who doesn't know what they are doing with it yet

Is it as dangerous as a kid finding a loaded gun? Probably not but do you get the idea?

All I'm saying is look elsewhere for solutions until you understand it better at the very least

If you don't take the initiative to learn the basics about something complex don't expect somebody to waste their time trying to explain it to you

Sure I could have spent a little more time making sure I wrote more organized or easier to understand but I don't think it would have mattered anyways

Shit grow up a bit I was only trying to warn you it can be dangerous, you went from asking for help to throwing a fit it makes you look really dumb regardless if you are or not

I'm sorry everybody I'm not usually so rude

P.s.
Waytowriteanentiremessagewithoutevenusingaparagraphitmakesitwayeasiertoread


--------------------
Quote from Stipe-n-Cap

"You appear to be talking about boosting tryptamine content in mycelium by amending LC with....whatever your amendments are. I have to say I'm a tad disappointed that you're addressing us with the shorthand of a 13 yo girl who's texting her besty for make-up tips, instead of proper English, which causes me to have doubts."


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OfflineHelloImBob
Old Guy
I'm a teapot
Registered: 03/30/08
Posts: 219
Last seen: 2 hours, 38 minutes
Re: Anyone use UV-C for sterilization? [Re: Nillion]
    #28620955 - 01/14/24 12:29 PM (13 days, 14 hours ago)

Quote:

Nillion said:
It works and most UV-C lights don't create enough ozone to be a big problem. Hospitals use the lights and there doesn't seem to be ozone related health issues associated with working in a hospital.

In fact, when someone is harmed from ozone poisoning they go to a hospital for treatment where UV-C units are common and they recover just fine.

It's also useful for niche applications as a mutagenic agent as mentioned.

It may not offer distinct advantages for cultivators who already have excellent technique or a laminar flow hood.




If you didn't read my post about how o3 breaks down into o2 after being tumbled in the air for awhile being used in HVAC and how stores are large buildings just like hospitals are large

The ozone is supposed to break down or at least get diluted enough before reaching people

A uvc light is an ozone generator in small amounts but it doesn't take much to burn your lungs over time like breathing chlorine if it's used incorrectly and even smells like chlorine if allowed to collect in an area without air movement

Are most people going to run 200+watts of uv-c and create enough ozone to maybe do lung damage? No

But direct exposure to the bulb can cause DNA damage and possibly instant eye damage, I personally don't want to try it to see for sure

I bet you could use a custom blu ray laser pointer to heat your needle red hot instead of a lighter or alcohol lamp

I mean we could all come up with obscure ways to do things instead of the tried and true methods people write teks about for no reason

I'm sorry if I'm being rude but I don't fully understand uvc

maybe because I know enough for what I use it for like fish tanks or HVAC but I've seen it turn silicone to crumbs in less than a year maybe 6 months and do things that make the worst sun burn you have ever seen look like nothing

It scares me

People should be afraid of it if they knew what it could do

The risk to reward ratio on that one is just not worth it


--------------------
Quote from Stipe-n-Cap

"You appear to be talking about boosting tryptamine content in mycelium by amending LC with....whatever your amendments are. I have to say I'm a tad disappointed that you're addressing us with the shorthand of a 13 yo girl who's texting her besty for make-up tips, instead of proper English, which causes me to have doubts."


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InvisibleStipe-n CapMDiscord
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Re: Anyone use UV-C for sterilization? [Re: HelloImBob] * 1
    #28624550 - 01/17/24 12:35 PM (10 days, 14 hours ago)

These have become my new most hated threads :lol:

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.

UV-C provides a false sense of security, much like using antibacterial agar but without gruesome DNA mutations. UV-C has very few, if any uses for home cultivation purposes, unless you're attempting some advanced mutagenesis type shenanigans.

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.

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


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




https://www.ehs.washington.edu/about/latest-news/trouble-uv-light-your-biosafety-cabinet


The National Sanitation Foundation  discourages the use of UV-C. UV-C has no place in your home cult lab. UV-C is absolutely 100% pointless and represents an unnecessary health risk. Straight up noobs arguing in favor of x technique or technology without the appropriate foundational knowledge/wisdom appears to be becoming the hallmark of psychoactive fungi cultivation.

Take pride in your work, do the appropriate research, and listen to those here who have been around for a while; You might be surprised to discover that they actually know a thing or two.

If you have questions regarding equipment function and efficacy, read this:

https://www.shroomery.org/forums/showflat.php/Number/27615199





:howyoudoing:




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OfflinePscientist
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Re: Anyone use UV-C for sterilization? [Re: Stipe-n Cap]
    #28624766 - 01/17/24 04:01 PM (10 days, 11 hours ago)

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:


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