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Lazarus Long Profile picture
@LazarusLong13
Dec 20, 2024 • 13 tweets • 5 min read • Read on X
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Not sure what is going on with @HealthcareGlob1 - they sure seem to have it out for @NukitToBeSure.

They blocked me after I pointed out that they were incorrect. I could care less about being blocked.

I do care they did not address the issues I raised. 🧵
They retweeted this tweet from DisabledDoctor, which has numerous issues.

1. FARUVC has been safely
& extensively tested on the eyes. There are a rather large number of studies on the topic.

2. FARUVC will not cause AQ issues, besides a Yup. Not even considering the fact that she recommends using her far-UV devices in ways that are possibly unsafe (pointed at face as they are untested on eyes and in poorly ventilated indoor spaces where it is likely it will cause air quality issues leading to or exacerbating respiratory problems). She's harming vulnerable people while profiting off of them and she seems to give no fucks while somehow managing to get people to aggressively support her when she is (fairly) criticized. She's a master manipulator 8:08 AM 11 Sep 29, 2024 7,975 Views
negligible amount of ozone.

But that's not me saying that, but the studies. Two studies in well sealed rooms - about 5 parts per billion, 5 ppb.

If you are in a well sealed room, you would want that window cracked, anyway, right?

If not, and you are In summary, the two published measurements of far-UVC associated ozone in real-world settings, both around 5 ppb, are likely to be upper limits in terms of real-life far-UVC usage; this is both because of the far-UVC doses used in the studies, but also because both rooms were comparatively well sealed (respectively 0.4 and 1.4 ACH, see Table 1), whereas far-UVC will predominantly be used in public indoor spaces, which typically feature higher air-exchange rates.18 Overall it is reasonable to assume that far-UVC-associated ozone levels in real-life settings are extremely unlikely to exceed 1...
gobbling a quick bite in an airport, not a problem, anyway, (I will only be doing a sipmask and shakes, myself) - the ozone will dissipate.

Guess what gobbles ozone? VOC carbon filters. Hit my account plus MEGA VOC to find the build.

But 5 ppb? I am not worried about it.
But, IS 5 ppb a risk?

No risk as low as 10 ppb per this study...and we are 5 ppb below that, with ways to mitigate even that. In summary, based on multiple very large epidemiological studies focusing on the relationship between outdoor ozone concentration and long-term human health, there is no significant evidence for increased ozone risks at ozone concentrations as low as 10 ppb, and there is persuasive evidence for a threshold in risk at ozone exposures below about 35–50 ppb; this pattern does not change whether or not other associated pollutants are included in the risk estimate. Although far-UVC lamps are not classified as medical devices, the epidemiological results are consistent with current FDA guidelines...
VOCs and ozone? You are right to be concerned - and now not be concerned 👇.

But...cleaning with limonene based cleaners (Citrus King , citrus smelling cleaners probably) ?

Turning off the FARUVC would be a reasonable thing to do.

onlinelibrary.wiley.com/doi/full/10.11…Indoors, at the low induced ozone concentrations of relevance here, ozone does not react rapidly enough with preexisting airborne VOCs to compete with even extremely low levels (e.g., 0.1 ACH) of room ventilation, so significant ultrafine particle production via far-UVC-induced ozone is unlikely. Experimental measurements in a real-life hotel room support this conclusion. One specific exception is the cleaning material limonene, which has an unusually high interaction cross-section with ozone; in the far-UVC context, turning off far-UVC lights during cleaning with limonene products would be...
Is Nukit just trying to just make a buck, taking advantage of the vulnerable?

No - lol. They are a huge influencer.

The vulnerable? They are the reason Nukit started w/UVC, to provide Covid free air to the poor jammed into tiny apartments with no room for CR boxes. Indoors, at the low induced ozone concentrations of relevance here, ozone does not react rapidly enough with preexisting airborne VOCs to compete with even extremely low levels (e.g., 0.1 ACH) of room ventilation, so significant ultrafine particle production via far-UVC-induced ozone is unlikely. Experimental measurements in a real-life hotel room support this conclusion. One specific exception is the cleaning material limonene, which has an unusually high interaction cross-section with ozone; in the far-UVC context, turning off far-UVC lights during cleaning with limonene products would be...
Finally, there has been a fair amount of discussion of the picture on the Cybermarket website.

Does it depict closer than 50 cm, which is the safe distance as amply discussed by Nukit?

cybernightmarket.com/products/mini-…Cybermarket 75 cm from faces.
Suggested use: Assuming no more than four hours of use in a single day, and an approximate room size of 9-12m², each lamp should be positioned no closer than 50cm away from a room occupant. The more widely the lamps are spread, the more air volume will be exposed. If there are children or pets present, the lamps should be placed well out of reach. For more information, see: How to use your Nukit Torch Far-UVC Lights
No. It is 75 cm. I DM'd that party.

I am in blue, they are in gray. Unless you are IN your dinner plate with your head, these are about an arm length away from your eyes 10:17 PM 3 feet then? At least 91 cm ? I have some long arms....but I went to be accurate. 10:18 PM Between 2 and 3 feet, so roughly 75cm 10:18 PM Ok, thank you.
Here is more by Nukit.

"... 200nm to 230nm is often described as “eye and skin safe” but is perhaps more accurately described as “safer”. There is still an exposure limit- just much, much higher than with other portions of the UV spectrum." Description: The germicidal properties of ultraviolet light are well established and have been in use for almost 100 years, but that effectiveness has always come at a price- the potential for eye and skin damage. Far-UVC, the portion of the ultraviolet spectrum that ranges from 200nm to 230nm is often described as “eye and skin safe” but is perhaps more accurately described as “safer”. There is still an exposure limit- just much, much higher than with other portions of the UV spectrum.
What are my biases?

I have disagreed with Nukit in the past on a couple of non-technical issues, but these are times fraught with tension.

On the technical issues, I have found them
incredibly knowledgeable, and I very much appreciate their engineering.

Anyone accusing Nukit of endangering others are simply not knowledgeable on the topic.

Do I have a Cybermarket light? No. Do I anticipate getting one? Maybe in the future, if they are still available.
I have other projects I am currently interested in.

Am I an expert in FARUVC? No, but I can sure read a study.

And so can you.

Where can you buy the lights?

Right here:

cybernightmarket.com/products/mini-…

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More from @LazarusLong13

Lazarus Long Profile picture
Dec 17
@neiljshaw - — a few tips on your excellent article from a clean air advocate

"Consider Wearing a Mask" ?

No, "It is incredibly important to wear a well-fitting mask such as a N95, KN95, or KF94, for the best protection."

You two are doing Image
public health with this article.

Public health is best done with simple clear instructions.

No:
"These masks act as a barrier, reducing the spread of respiratory droplets when people talk, sneeze or cough."

Yes:
"These masks act as a HEPA air cleaner for the face,
cleaning the air of respiratory aerosols when people breathe, talk, sneeze or cough."

The barrier carries the idea of an immovable wall. Unable to be penetrated by things like oxygen and CO2 - which feeds antimaskers.

As an who debunks antimaskers, it is
Read 9 tweets
Lazarus Long Profile picture
Dec 11
As an anonymous clean air advocate, I've put a bit of thought into how to present, well, my expertise.

If someone were to say, "How do I know you know what you are talking about? Are you a doctor, or a virologist?"

To which, I would say...."No, but that's a good thing.
/1
I have focused on aerosol and masking science. Because it is those fields that give us the most information on how airborne particles, aerosols, get from Person A to Person B.

My expertise is derived from the great studies of Dr. Lindsay Marr, MacArthur recipient. Dr. Prather,
double National Academy member, Dr Milton, inventor of the Gesundheit, aerosol scientist and medical doctor; Dr Coleman whose group found that duckbill N95s captured 98% of emitted respiratory aerosols, and more excellent individual aerosol scientists.
Read 17 tweets
Lazarus Long Profile picture
Nov 22
I am not a fan of nasal sprays to stop The 'Vid, but I respect you having it as a layer in the Swiss cheese package.

But, some people have said they got bloody noses.

While at the ER yesterday, I picked up a pretty good at home technique. Let our $1,000 lay-out
Image
save you money.

Use tongue depressors to make a nose pinch clamp.

Leave it on for 30 minutes. Still a problem? Two sprays of Afrin, and re-apply nose pinch clamp. Wait 30 minutes.

Still a problem? Cotton balls sprayed with Afrin, clamp, 30 minutes

aliem.com/trick-of-trade…Image
Image
Image
Afrin- in generic form is $3.32 at Walmart.

Also, put a ice compress at the back of the neck, while doing the above.

"Cooling the nape of the neck is said to induce reflex constriction of the mucosal vessels of the nose"

✅ I agree with the authors.

pubmed.ncbi.nlm.nih.gov/1568881/Image
Image
Read 6 tweets
Lazarus Long Profile picture
Nov 13
A study demonstrated 100% PERFECT protection against SARS2 w/ readily available KF94s

✅ 181 HCWs
✅ 1 got SARS2 antibodies, but an epi investigation -> the infection happened elsewhere.
😡 The final checkpoint was March 2021. N95s only became freely available 1 month later
/1 FDA: N95 masks, now plentiful, should no longer be reused By MARTHA MENDOZA and JULIET LINDERMAN (Associated Press) April 23, 2021 12:44 p.m. Medical providers may soon return to using one medical N95 mask per patient, a practice that was suspended during the pandemic due to deadly supply shortages
What is described in the tweets
in the USA.

Korean study:
jkms.org/DOIx.php?id=10…

This is in comparison to a Swiss study during the same rough time-frame. A study which did NOT show the same excellent results, but dismal results. Why?

The Swiss had the same sort of fit testing,

pubmed.ncbi.nlm.nih.gov/35123572/ Results: We enrolled 3259 participants from nine healthcare institutions, whereof 716 (22%) preferentially used FFP2. Among these, 81/716 (11%) reported a SARS-CoV-2-positive swab, compared to 352/2543 (14%) surgical mask users; seroconversion was documented in 85/656 (13%) FFP2 and 426/2255 (19%) surgical mask users. Adjusted for baseline characteristics, COVID-19 exposure, and risk behaviour, FFP2 use was non-significantly associated with decreased risk for SARS-CoV-2-positive swab (adjusted hazard ratio [aHR] 0.8, 95% CI 0.6-1.0) and seroconversion (adjusted odds ratio [aOR] 0.7, 95% CI ...
PPE monitoring.

What was the big difference?

Are N95s/FFP2s inferior to KF94s?

No, it was supply - and other reasons.
Read 10 tweets
Lazarus Long Profile picture
Nov 5
@tomhanks has just been savaged by people screaming masks don't work.

All hospitals have fiduciary responsibilities to not waste money.

Here is a light sampling of hospitals mandating masks because they work.

Proving that not only do masks work, but mask mandates work.

Thread
Health PEI
Start/End: October 14, 2025 , How many hospitals: 7, employee count: 4,967,

Public hospital,

City: Various (e.g., Charlottetown, Summerside), Province: Prince Edward Island, Country: Canada, full url: princeedwardisland.ca/en/news/health…
Horizon Health Network
Start/End: September 3, 2025 How many hospitals: 12, employee count: 15,000, public or private:

Public hospital.

City: Various (e.g., Saint John, Fredericton),
Province: New Brunswick,
Country: Canada horizonnb.ca/coronavirus-co…
Read 32 tweets
Lazarus Long Profile picture
Nov 2
Thread of debunking the myth that "babies should not be masked."

A baby uninfected is better than a baby infected.

If you oppose masking babies, you are immediately for infecting babies.

Let's get to it. A most excellent instruction page on how to mask babies. Suck it antimaskers.
This solves an equity problem.

Not everyone has the money or technical skill to build a baby buggy PAPR.

Just like not everyone has the money to buy an adult PAPR.

Are you for people on SNAP being able to protect their babies? Or not?

Most can rustle up the money to buy some uber cute baby masks!

This is the link from the baby zine.

These need to be fit tested.

Now, let's get into the good stuff. The "OMG Laz has gone too far! We've got him!"

You better bring your A game.

aliexpress.us/item/325680749…
Read 39 tweets

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