That's super interesting. My wife has had a lot of gum problems that have baffled dentists. They basically have said they just don't see people who take such good care of their teeth have such problems.

And you're doing this with the O3 Pure device?

> you're doing this with the O3 Pure device?

Yes.  Works as well as straight peroxide based on personal observations, maybe a little better.  We put O3 solution in a water flosser to get it under the gum line.  Just drop the O3 discharge tube in the filled reservoir.

https://www.amazon.com/s?k=portable+oral+irrigator

Thanks. We already have the water flosser and Theresa's dentist suggested an H2O2 rinse. 

Interesting idea to use O3 instead.

I just saw this consumer level ozone sprayer for disinfecting and cleaning.

https://boingboing.net/2021/03/16/this-ozone-sprayer-cleans-disinfects-and-sanitizes-without-toxic-chemicals.html

Good find!  So I went digging...

https://www.amazon.com/O3Waterworks-Sanitizing-Produces-Effective-Bacteria/dp/B088VL9ZL5
^{bottle creates approx. 1.5ppm or 1.5 mg/l. Do not use distilled or de-ionized water.}
<++>
1.5mg/l not strong enough to be classified as a disinfectant. Just a sanitizer.
What Is Aqueous Ozone: How Do O3Waterworks Sanitizers Work? | The Strategist
https://nymag.com/strategist/article/aqueous-ozone-o3waterworks-investigation.html[/sup]


https://www.amazon.com/HoMedics%C2%AE-Multipurpose-Deodorizer-Refillable-Appliances/dp/B08K3RW1W1
^{user checked the concentration twice using the 4 minute cycle. It reads 0.11 ppm.}

https://www.amazon.com/EnozoPRO-Sanitizing-Ozone-Spray-Cleaner/dp/B07VTQY4JR (pandemic pricing)

I'll run these by the nursing home, for sure.  Thanks.

<+++>
To wrap up my research on aqueous ozone, I found a tech article that said you need 500ppm to be a hospital grade disinfectant.

<++++> ^{(rabbit hole)}
AQUEOUS OZONE PATHOGEN SUMMARY TESTING SPONSORED BY TERSANO, INC.
Results from Tersano testing showing the power of aqueous ozone and the time required to destroy various
bacteria at a strength of 2 ppm or less.

MICRO-ORGANISM GROUP STANDARD REDUCTION TIME
ODOR TEST RESULTS

Proteus mirabilis - Bacteria Fabric Surface Sanitizer Method >99% 30 secs

BACTERIA TEST RESULTS

E.coli - Bacteria Fruit and Vegetable Antibacterial Wash Test > 99.99% 30 secs
Listeria - Bacteria Fruit and Vegetable Antibacterial Wash Test > 99.99% 30 secs
S. choleraesuis - Bacteria Fruit and Vegetable Antibacterial Wash Test > 99.99% 30 secs

Aqueous Ozone is approved by the EPA, FDA, USDA, is considered GRAS, and is compliant with the
EPA Organic Program as a natural and effective cleaner and sanitizer.

https://www.compassonehealthcare.com/files/2616/0691/8284/5Pillar_app08tersano.pdf

----------------------
The technical definition of sanitizer vs disinfectant:   
Sanitizer - kill 99.9%  certain bacteria, in a specific period of time, and are regulated by the EPA.


Disinfectant -  kill 99.999% of a wider range of microorganisms; bacteria, viruses, mildews, or fungi, in a specific period of time, and are also regulated by the EPA.

Will they oxidize surfaces? Seems like water + O3 = rapid oxidation. Should be fine for stainless steel, but I wonder about other surfaces, especially metals

>metal

Absolutely.  I have a campy-looking metal cabinet in the master bath for my daily medical equipment. That small vegetable washer O3 generator is located just above it on the corner of the vanity.  We've mentioned that O3 is heavier than air, so it cascades down to the top of the metal cabinet.  Over the past year, it has rusted a 6" x 6" spot where the O3 hits.

I came across this today. A "certified building biologist" who warns that she has had some good and some bad experiences using ozone in houses.

https://www.mychemicalfreehouse.net/2019/07/using-ozone-to-clean-up-toxins.html

The large one I'm using says it is rated for 11,000mg/hr

About 2 weeks ago, I o3'd one of the double closets in the master bedroom. letting it run in a confined space with clothing & shoes for 1.5 hrs.  AFAIK, no negatives but it did take a day or more for the lingering o3 smell to go away.

Ours is smaller, but our friend wanted to get rid of embedded pet smells from a previous resident in her apartment. A couple hours was not enough. The next day she did something like 6 hours. That seemed to help. No damage (she removed all plants).

But this came up today because we were looking into mold remediation, which apparently requires very high concentrations over long periods of time (24-48 hours). As mentioned in the article, it's long enough that you have to be sure to introduce new O2 otherwise... I didn't read carefully enough to understand the otherwise. Apparently if you don't have enough O2 to convert to O3, things get a bit crazy.

So kind of an edge case, but it made me realize that our plan to lend the unit to friends for mold remediation in a shared housing type of situation - basically a dormitory in a very porous building from the 1930s - was probably not prudent.

My understanding is that it can break down other materials, and so make the room virtually uninhabitable.

Yes, the woman in the article said she ruined one house. There are things like polyurethane with formaldehyde that become *more* toxic after ozoning. Also natural rubbers and all sorts of other materials can be negatively impacted. At high enough doses, even wood.

So it's one thing to dose to the point of killing coronavirus on surfaces and in the air, but the amount required to kill mold that might be rooted in fabrics and even wood is really toxic. And if the mold is in the walls, of course ozone is no help since it only goes to places with airflow.

>My understanding is that it can break down other materials

My nephew's wife had some badly burnt bones (making bone broth, didn't have enough water in the pot, left the house...) that made the house unlivable. They initially just wanted to bring in some ozone machines but after talking to a home restoration company they were advised against that since the ozone at the levels they would have needed would have greatly reduced the lifespan of all their clothes, carpets, sofas, etc.