Here at Nukit, we do a fair amount of R&D, and while much of it comes to nothing, sometimes it's an interesting sort of nothing worth writing about.
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Recently we did a deep dive on CLO2, aka Chlorine Dioxide, an active ingredient in various dodgy products pushed early in the pandemic before they were widely exposed as a scam. We wanted to see if there was a tiny bit of science at the root of it all and if anything might come of it.
We're only going to talk about CLO2 gas as an airborne mitigation - but some people ingested it - which is a terribly bad idea. There is zero evidence that if ingested, injected, etc., it will do anything but harm you and then eventually kill you in a really painful way.
Coronavirus (COVID-19) Update: FDA Warns Seller Marketing Dangerous Chlorine Dioxide Products that Claim to Treat or Prevent COVID-19
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However, CLO2 is still sold - and is quite popular in some countries as a mitigation against airborne pathogens. It relies on the old "Bubble of Protection" marketing scam, aka the "air is Jello" cognitive fallacy.
The "Bubble of Protection" pitch suggests to consumers that they can treat just the air immediately around themselves and that air will somehow (perhaps through previously undiscovered laws of physics) cling to their heads and follow them around or stay still and motionless while they sit, providing a steady 10 liters per minute of clean air that somehow does not mix with the rooms ambient air (possibly via wizardry, we respectfully hesitate to speculate on phenomenon so far outside the range of known science).
Consumers find this idea far more appealing than the obvious reality where air is a fluid, constantly swirling around us, mixing with all the air in the room like cream in coffee, and there's no way to keep it separate, have it politely stay in one place or follow our heads around snobbishly refusing to mix with "dirty" air. "Bubble of Protection" marketing is still quite common- and still unrealistic.
CLO2 is sold in a variety of form factors - wristbands, badges, pens, glowstick-style pendants that clip onto your pocket, air freshener canisters. All claim that they will slowly release chlorine dioxide into the air and protect the area around the user from pathogens.
Now, like most of these things, the claims aren't made out of thin air, there are official looking certifications, and quite a few studies presented that seem to support their claims that chlorine dioxide gas really does mitigate airborne pathogens.
Inactivation of Airborne Bacteria and Viruses Using Extremely Low Concentrations of Chlorine Dioxide Gas
Protective effect of low-concentration chlorine dioxide gas against influenza A virus infection.
Effect of low-concentration chlorine dioxide gas against bacteria and viruses on a glass surface in wet environments
Disinfection performance of chlorine dioxide gas at ultra-low concentrations and the decay rules under different environmental factors.
Roughly speaking, from the data we have, the dose required to have a reliable effect on a wide range of airborne pathogens is 0.1 ppm (0.3 mg/m³). Unfortunately, this is also the NIOSH limit for long-term exposure. So 0.1 ppm (0.3 mg/m3), no higher, no lower - it's a tiny, tiny window of efficacy versus safety.
As with all safety evaluations, we need to be able to measure what we are evaluating. So we're using one of these:
This is a fantastically well-designed little device that resolves down to 0.1 ppm, but flashes and beeps at 0.3 ppm - the NIOSH limit for safe exposure for 15 minutes. (We wore a respirator during testing of course, 3M cartridges are inexpensive, work well against CLO2 and most other common threats, so should already be part of everyone's emergency kit.) The Honeywell is not research lab accurate - but safety accurate, which is good enough for what we do.
Like GUV, once you have a good gauge and some appropriate PPE, CLO2 is pretty easy to safely work with - but without means to accurately measure what you are managing, you are really flailing around in the dark and wasting everyone's time. There's no way to make a meaningful safety assessment of a given product if you can't verify the manufacturer's claims.
All of the CLO2 personal protection products we have tested basically work by the same mechanism - a two-part reaction of powder and liquid (usually water) produces a gel that slowly releases CLO2 over a period of days or weeks.
Different companies stabilize the solution in different ways, the mechanics vary, but usually a capsule is broken in another container to start the reaction, but the basic chemistry is the same.
We put the different products in a sealed plastic box to test the reaction and the sensitivity of the meter, then in a small bathroom with the vents turned off, and then in an office.
Imagine if the air around you could be cleaned as easily as wiping down a countertop. Sounds like a dream, right? But with Chlorine Dioxide, it’s actually quite possible. This remarkable chemical compound is gaining attention for its powerful ability to disinfect air and eliminate harmful microorganisms.
In this article, we’re going to explore how Chlorine Dioxide works, why it’s being used more often in homes, offices, hospitals, and public spaces, and why it might just be the invisible hero in your fight against airborne germs. Don't worry—we'll keep things simple and clear, just like the air you're aiming for.
Chlorine Dioxide (ClO₂) is a yellow-green gas with a strong odor. While its name might remind you of chlorine (used in pools), it behaves quite differently. Think of it like a distant cousin that happens to be more focused on disinfection and oxidation without producing harmful byproducts like some traditional cleaners.
It’s been used for decades to purify drinking water, sanitize surfaces, and even clean food-processing equipment. But only recently has it taken center stage for air disinfection.
The magic behind Chlorine Dioxide lies in its ability to oxidize—a scientific way of saying it reacts with and destroys harmful microorganisms like bacteria, viruses, and mold spores.
Think of it as a molecular ninja. It slips into the air, targets pathogens, and neutralizes them by breaking down their cell walls. What’s even better? It doesn’t leave a sticky or smelly residue behind.
Let’s break it down:
Kills a broad range of pathogens – bacteria, viruses, mold, and fungi.
Effective at low concentrations – making it safer and more economical.
No harmful residues – unlike some chemical sprays or ozone machines.
Odor elimination – also neutralizes foul smells.
Works in both small and large spaces – from your living room to an entire hospital wing.
It’s like having an invisible cleaning crew on standby 24/7.
This is one of the most common and valid concerns. Yes, Chlorine Dioxide is safe when used correctly. Regulatory bodies like the EPA and WHO approve it for use in water treatment and surface sanitation.
The key here is controlled dosage. Like any powerful cleaner or disinfectant, using the right amount in the right way is crucial. At proper concentrations for air disinfection, it poses minimal risk to humans and pets.
Did you know that many people now use Chlorine Dioxide generators or gel packs to keep the air in their homes clean? Especially in areas with poor ventilation or high humidity, it helps:
Prevent mold growth in basements and bathrooms.
Eliminate pet odors and allergens.
Reduce transmission of airborne viruses.
It’s a fantastic choice for families with kids, elderly members, or anyone with respiratory sensitivities.
Hospitals have one major priority—infection control. Chlorine Dioxide is a trusted ally because it:
For more Chlorine Dioxide Air Purification GELinformation, please contact us. We will provide professional answers.
Disinfects operating rooms and patient areas.
Reduces the spread of hospital-acquired infections (HAIs).
Is effective against resistant pathogens like MRSA and C. difficile.
Some facilities even use ClO₂ gas fogging for full-room sterilization.
Think buses, trains, and airplanes—all high-traffic, enclosed spaces. Chlorine Dioxide is used to:
Purify air during and after service hours.
Maintain hygiene without overpowering chemical smells.
Reduce passengers’ exposure to contagious illnesses.
A quick fogging or timed gas release can make a big difference in public health.
In the post-COVID era, air quality in offices has become a priority. Employers are now turning to Chlorine Dioxide air systems to:
Keep shared workspaces clean.
Reduce absenteeism from airborne illnesses.
Promote employee wellness and confidence.
It’s a discreet and efficient way to maintain hygiene without disrupting daily operations.
In the post-COVID era, air quality in offices has become a priority. Employers are now turning to Chlorine Dioxide air systems to:
Keep shared workspaces clean.
Reduce absenteeism from airborne illnesses.
Promote employee wellness and confidence.
It’s a discreet and efficient way to maintain hygiene without disrupting daily operations.
New tech makes things even easier. Now you can buy portable ClO₂ gel-based devices or small gas generators for:
Cars and RVs
Hotel rooms
Personal offices
Travel bags
Unlike some chemical disinfectants, Chlorine Dioxide breaks down into harmless salt compounds. It doesn’t persist in the environment or produce long-lasting pollution.
It's like using biodegradable soap instead of harsh bleach—it gets the job done without damaging nature.
Here are a few safety tips:
Follow manufacturer guidelines for gels, sprays, or gas generators.
Ventilate if needed after large-scale disinfection.
Keep out of reach of children unless the product is specifically labeled as safe.
Don’t mix with other chemicals—especially acids or ammonia.
Let’s bust a few myths:
“It’s just like bleach.” – Nope. It's chemically different and safer at lower doses.
“It’s dangerous for humans.” – Only in high doses. At regulated levels, it’s safe.
“It doesn’t work.” – Numerous scientific studies prove its effectiveness.
1. Is Chlorine Dioxide safe to breathe?
Yes, at low concentrations used for air disinfection, Chlorine Dioxide is considered safe. Always follow usage guidelines.
2. Can Chlorine Dioxide be used around pets and children?
Yes, many products are designed to be pet- and child-safe. However, read product labels carefully to ensure safety.
3. How is Chlorine Dioxide different from bleach?
Though both are disinfectants, Chlorine Dioxide works differently and doesn’t produce harmful chlorinated byproducts like bleach.
4. Does Chlorine Dioxide remove odors as well?
Yes! It neutralizes odor-causing compounds, making the air smell fresh without heavy perfumes.
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