Materials ozone resistance chart

A common question when implementing ozone into a new application is how will ozone affect the materials we currently have in place.  Below is a useful chart showing the resistance of common materials to ozone oxidation. A = Excellent – no effect from ozone in normal operation B = Good – some oxidation from ozone, these materials can work with low ozone concentrations or short-term (less than 6-month) usage C = Fair – major effect from ozone oxidation, these materials should only be used for short-term applications or very low ozone levels D = Poor – severe oxidation from ozone will be noticed quickly.
ABS plastic B – Good
Acetal (Delrin®) C – Fair
Aluminum A – Excellent
Brass B – Good
Bronze B – Good
Buna N (Nitrile) D – Poor
Carbon Steel C – Fair
Cast iron C – Fair
Ceramic A – Excellent
ChemRaz (FFKM) B – Good
Copper A – Excellent
CPVC A – Excellent
EPDM B – Good
Fluorocarbon (FKM) A – Excellent
Hastelloy-C® A – Excellent
HDPE B – Good
Hypalon® A – Excellent
Hytrel® C – Fair
Kalrez A – Excellent
Kel-F® A – Excellent
LDPE C – Fair
Natural rubber D – Poor
Neoprene C – Fair
NORYL® B – Good
Nylon D – Poor
Polycarbonate A – Excellent
Polyetherether Ketone (PEEK) A – Excellent
Polyethylene B – Good
Polypropylene B – Good
Polyurethane A – Excellent
PTFE A – Excellent
PVC B – Good
PVDF (Kynar®) A – Excellent
Silicone A – Excellent
stainless steel – 304 B – Good
stainless steel – 316 A – Excellent
Titanium A – Excellent
Tygon® B – Good
Viton® A – Excellent
More useful information on ozone resistance can be found HERE We also perform ozone resistance testing in our ozone chambersContact us for information about this service should you have any materials you have specific questions on.

140 thoughts on “Materials ozone resistance chart”

  1. Hi, thank you for all the information on your website. It’s excellent.

    In your list of Materials ozone resistance chart. Do you know if ozone has good compatibility with ” Polystyrene ”?

    Only this material that I did not find.

    Thank you so much.

  2. Thank you for providing the material list vs. ozone. May I know if ozone has good compatibility with leather and vinyl?

    Thanks for your help

    1. Ozone in air or water at low levels is fine with both leather and vinyl.
      Ozone in water is fine with both an levels up to 20 ppm
      Ozone in air should be kept below 20 ppm with leather, and 1,000 ppm with vinyl.

  3. Hi, thank you for the information of your list. It’s very useful. May I know exactly what “short-term applications or very low ozone levels” means in C=Fair?
    Thank you so much.

  4. Diego Emilio Merati

    In Italy a fake news is spreading, someone asserts that Ozone is dangerous for electronic components and destroys computers and cards, I am convinced of the inaccuracy of what has been said, and I also did a check on your table, there is some document of some scientific company ? I want to stop this madness.

    1. We have machines that put off 74,000,000 ppm and use up to 3 machines at a time in customers homes to kill mold for 24-48 hours. I can’t tell you how much ozone actually ends up in the air because we can’t leak proof the home. What I can tell you is that in two years of doing this I have only seen 2 occasions of any type of damage. Once a clients daughter had a cheap, thin throw away toy (unknown material) that disintegrated. And once on my home we had some nitrile glove disintegrate. Both were over 48 hour runs. My machines are filled with rubber coated wires and in two years of them marinating in the ozone of every house we have done they are still in great shape.

  5. Endre Buzogany

    Hi, thank you for all oft he information. May I ask you, may I use IBC container (it is from PE) for ozonation in drinking water treatment ?

      1. Hi,
        As per your chart,
        for low O3 levels of 0.5 ppm, you have specified HDPE to be good for short term. Here the IBC container would have O3 level of 2 ppm in water…..
        Cheers

  6. Can i use Polypropylene filter bag for Ozone in drinking water treatment which below 1ppm? What material of filter bag is best compatible for this application?

    1. Polypropylene should work fine. Best material is dependent upon the requirement of filter, what is the filter going to filter from the water? For general TSS, a poly filter is fine.

  7. Can I use ozone water with concentration of 1,4mg/l to clean and desinfect taps and sincks mades with nickel plated?
    Thanks!

    1. Ozone levels of 1.4 mg/l may not achieve complete disinfectio of surfaces, therefore I am not sure if this will work. I would always suggest ozone levels of 2.0 ppm or greater for disinfection.

      If you are asking specifically about the ability for nickel plating to withstand low ozone levels, the answer is yes, this should be fine. 1.4 ppm ozone in water is low enough it will not harm most any materials.

    1. Only at low ozone concentrations. If using ozone from air at concentrations below 0.5% by weight, this is okay. Anything higher is bad.
      Silicone will not handle the high concentrations of ozone. It will dry out and crack.

        1. Silicone deserves an A rating when used with ozone in water, or low concentration of ozone in normal air.
          Silicone is not good in an ozone generator where the feed-gas is very dry and ozone concentrations are very high.
          Our generic chart does not account for every possible scenario. Ozone reacts differently in wet and dry environments and in air or water.

    1. Yes, PEX is a polyethelyne material. This is a fine option for ozone in water at low levels. Certainly, the level of ozone in a domestic drinking water system will be well below 2.0 ppm. Therefore, this should work great.

  8. I want to disinfect my wetsuit made of Neoprene with ozone. Neoprene rated at a C level, what level and how long would you recommend.

  9. I was thinking of using ozone gas to sterilize the inside of 1/4″ PE tubing that I use for water well testing after I have tested a well with known coliform bacteria. I would use a 5-10 minute ozone purge followed by a a purge of air. Will that significantly degrade the PE tubing?

    1. Provided the ozone level remains lower than 0.5% or so, this should not be an issue.
      It would be more effective (and less potential damage to the pipe) if you used ozone dissolved in water for this sanitation process.

  10. Greetings, any data on ozone compatibility of (1) Polyacrylonitrile (An-69), (2) Polymethylmethacrylate (PMMA), (3) Polysulfone, (4) Ethylene vinyl alcohol (EVOH), and cellulosen based polymers: (5) regenerated cellulose, (6) Cellulose diacetate, and (7) Cellulose triacetate?

  11. Morning
    I have pex piping for 9 years with ozone switched on for 1 hour
    There is now a metalic taste in the water and I think the pex is breaking down

    1. PEX is normally very good with ozone. You may have a fitting that is a problem or another component. I would need more info on your water and ozone levels to offer much more guidance on this.

  12. Hello, is Monel compatible with Ozone? I see Hastelloy C has an A rating and stainless steel 316 also has an A rating. Will Monel work as well as Hastelloy C or SS316? Thanks,

  13. Hello, thank you for this useful chart.
    Would you know the rating for epoxy resistance to ozone? I can’t find it in the chart. I need to use it for application in low levels of ozone, up to 0.2 ppm, without degradation. Is it okay? Thanks.

      1. Hello, for one of the parts I have the specification EPGM 203 / VmEM2 (others are only stated as epoxy). For this question I’ll assume that other parts are of this same material.

  14. Hi,
    I want to use ozone in cold water for a CIP process (once/month) in a liquid sugar line (food process). My valves are butterfly valves with EPDM seating and SS316. Is EPDM ok for this application considering the limited exposure to ozone? Thanks,

    1. EPDM should be fine in this application.
      EPDM does not handle gaseous ozone, or ozone in off-gas lines well. However, EPDM handles ozone dissolved in water very well.

  15. Daniel Gruenberg

    Does stainless steel 316L breakdown ozone in air? I’m specifically asking about the effect of the SUS316 on the ozone, not the effect of ozone on the 316

  16. I have bought ozone generator sprayer for sanitizing purposes that will create max 2ppm ozone concentration. Does this concentration will have effect on metals and metal alloys? Soaking vs. just spraying?

  17. What is an acceptable ppm level for neoprene in contact with ozonated water? Atmospheric pressure, continual use/exposure.

    What is a good alternate material selection for Neoprene for 1 ppm ozonated water or less? Atmospheric pressure, continual use/exposure.

    Thanks!

    1. Keep ozone levels below 0.1 ppm in water for long-term use with neoprene.

      Alternate materials would be EPDM or Viton. Others may also work depending upon application and material availability.

    1. Nickel itself is a very stable metal with a common oxidation state of +2. While nickel can be further oxidized it is minimal and should not be considered susceptible to ozone oxidation in normal conditions.

  18. I’m dealing with a mold concern in my bathroom. But I live in a manufactured home. I was reading on another website how the plastics in manufactured homes potentially are damaged by ozone. I ran a small generator in my bathroom for 48ish hours But after the treatment I realized I have a plastic bathtub. I don’t know what kind of plastic it is. Potentially how much damage do you think I could’ve possibly caused by using the Ozone?

    1. Plastic bathtubs are made out of a variety of different types of plastic materials but ASB and fiber-reinforced polyester are most common. Only the fiber-reinforced polyester would be a concern, but any damage would be superficial given the low concentration of ozone and limited time. If anything, it may have caused some discoloration.

  19. Hi there – would it be safe to use aqueous ozone (quality control checked up to 1.5 parts per million (PPM) ozone in solution) on any rubber surface? The company haven’t got the exact material but it is the rubber type material you see in between train carriages. They are concerned of the effect of ozone on this material however it cant be natural rubber as it would degrade when exposed to gaseous ozone surely anyway. Any help and/or back up data/reports would be appreciated.

    1. I am assuming this is frequent but not continuous exposure to aqueous ozone. If this is the case, and if the rubber is not buna-N (natural rubber) there will no issues at all. This is very low level of ozone in water and causes very few issues. Certainly less corrosive than city water with high levels of chlorine in it.

  20. Hi There

    We have Nylon 66 0.2 and 0.03um filters in our De-Ionized water supply. We would like to do an occasional ozonation of the DI system with 1.0 ppm ozone in solution to kill bacteria. Would a 1 hr ozonation once per month cause a problem to the nylon filters?

    1. 1 ppm ozone is fairly low. This should not cause any issues.

      Think about this, free chlorine levels in water at a drinking water tap may be as high as 1 ppm from city water supply. chlorine is just as corrosive as ozone in water as chlorine has a residual, while ozone reverts to oxygen. Therefore, if you would expose this filter/fittings/etc to unfiltered city water, 1 ppm ozone will be no problem.

  21. Many portable one person steam saunas are made of polyester material.
    An ozone session may be up to 30 minutes.
    Concentration of 25-45 mcg/ml.

  22. To complete my above statement, I want to add the question: is polyester material compatible for the ozone environment as described above, for the sauna chamber which is wrapped in that material, across thirty minute period at the stated concentration?

  23. -I am seeking to design a counter flow Heat Recovery Ventillation system, supplying air which varies greatly in humidity often condensing water in significant volumes, sometimes ice formation will occur.

    -Would like to use OZONE to clean heat exchanger of cooking oils to maintain efficiency and keep ventilation completely sterilized of fungi, which requires greater than 2ppm Ozone Concentrations.

    -Ozone Destruction System before entrance of structure for safety.

    -Inner Aluminum heat exchanger,
    Ozone should create a thicker more durable aluminum oxide passivation layer than regular air correct?

    *Potential external ducting Materials:

    -Would HDPE fail at high concentrations
    If so how does it fail?
    In both dry and wet conditions?

    -Would PVC fail at high concentrations?
    In both dry and wet conditions?

    -Would CPVC be effected by high concentration of ozone?
    In both dry and wet conditions?

    -Also rubber couplers used in common household pvc plumbing, are they affected by ozone at high concentration?
    In both dry and wet conditions?

    -Lastly would higher than 2ppm ozone damage inline centrifugal fans with exposed rubber insulated conductors?

    Thank you for your time,
    Have a nice day.

    1. Very high concentrations of wet ozone above 200 ppm can react with nitrogen in the air to create nitric acid which will erode aluminum. The plastics will be ok in ozone conditions less than 200 ppm. They do become more brittle over time with exposure to ozone. Rubber components quickly break down, crack, and melt down with exposure to ozone. Viton rubber is the only rubber that holds up. The plastic insulation for motor wiring has some resistance to ozone corrosion. Thank you. -Oxidation Technologies

  24. I am evaluating underground waste piping MOC in a facility with a Water for Injection system that is periodically sanitized with ozone. ~Once/wk ozonated water in the range of .05 to .2 PPM will be flushed to drain. Each point of use will be flushed for ~5 minutes. Is polypropylene a suitable material as this is not continuous use and relatively low concentration?

    1. That is a very low ozone level in water. I would not be concerned.
      Compare that to free chlorine in city water of up to 1ppm at all times. The chlorine would cause much more degradation to the piping than ozone would.

  25. Hi. 3-4.5 ppm o3 water. Which material should be used for a hoses: PTFE is very expensive please tell me if EPDM or PVC will be ok?

    1. CPVC will work fine, if that is not available, consider PVC.
      Do not use EPDM, it is not good with ozone in water. EPDM holds up to dry ozone much better than wet ozone.

  26. Hi. I’m wondering whether if SUS 316L will be affected by ozonated water over 30ppm. I’m not sure whether it will be right to use BPR made of SUS 316L

    1. 316 SS should be fine provided the water is pure and clean. With any metals in the water reactions will take place between the high levels of ozone and the metals to degrade the stainless steel.

  27. Hi,

    Very informational post. How is polyurea’s resistance to ozone or ozonated water? I saw polyurethane is excellent.

    Thanks

    1. Not much info will be found. Both materials are not good with high concentrations of ozone. Therefore, few applications will be found for these materials in an ozone system.
      Your relatively low ozone levels may work okay, however, due to the rare nature of the use of ozone of this mid-range with relatively poor materials for ozone would be rare to test for. You would likely need to perform your own testing to determine what suitability would be.

  28. We manufacture high concentration ozone generators (up to 8%w/w).
    Which rubber material would you recommend for O rings & seals? Why?
    Pour observations so far:
    Silicon – Looses elasticity and becomes brittle after long exposure
    EPDM – Becomes sticky
    Viton – No physical / visual damages
    Kindly give your opinion / suggestions

    1. We prefer the use of Teflon when possible for a gasket. PTFE or FEP are both fine
      If Teflon is not possible, Viton is a reasonable alternative but will crack and lead over time.

      We would not suggest silicone or EPDM in an ozone generator. Both would fail quickly.

  29. Hello,
    I was interested to know the standard (ISO/IEC etc) by which these ozone resistant ratings ‘A/B/C/D’ have been evaluated – especially for plastics. What is the procedure of testing and how do we classify or grade the results?

    1. Testing for most plastic and rubber is done to various ASTM testing protocols. We can and do perform this testing in-house. See link below for an overview of the standards we will test to and methods:
      https://www.oxidationtech.com/services/ozone-exposure-testing.html

      Most of the ratings given are subjective ratings based on actual experience with these materials in various real-world applications. A minority of ratings are based on standardized test data.

  30. we have a 2007 Toyota (Camry) Solara convertible that we have ozonated twice in recent years to kill mold. The device used was the O3 BioStatic Air Synthesizer sold by Bio-Cide Laboratories. I don’t remember noticing a change after the first use, but such is possible. Definitely there is now change to the soft vinyl used on the top of the dashboard. With sun or heat, the vinyl becomes very sticky as well as shiny, wet-looking and reflective against the windshield.I have tried cleaning the surface with Dawn dish soap, white vinegar, ammonia based window cleaner and a dashboard preparation in various areas. Little or no impact. This leads me to suspect that ozonation altered the product. Fortunately the product is in limited use in the car, or at least in sun exposed areas. ?comment? ideas? thanks

    1. It is possible you caused the degradation to plastic materials in the car. If ozone levels were high enough for a long enough period of time the plastic will get sticky. It would also be most noticeable to areas that are also exposed to UV as the degradation from UV and Ozone are similar over time. If ozone has caused degradation there will be less resistance to the negative affects from UV over time. Try some Armorall protectant on the affected surfaces, that would be your best shot at prolonging the life if it was negatively affected.

      It is also possible that ozone reacted with other compounds and it is just sticky from those compounds. Then clean with a solvent first.

    1. Yes, if water is clean with no impurities and temperature is below 70-deg F this should work.
      If temp is high, or there are impurities in the water that will react with ozone you should use a Teflon material.

  31. Hello,
    We’re experiencing some problems with the valve seal exposed to ozone and moisture. We have tried Viton but the results for a longer exposure time were poor. The seal had melted. Better results with Kalrez (FFKM) but the cost is absurd. EPDM had the same problem as Viton. Any idea about an alternative material?
    Thank You.

    1. Sure, can you give some details on the application? Like ozone concentration, is this ozone in air, water, dry air, etc?
      Temperature of air or water?
      Materials will react differently in various environments.

      1. Hi Joel. Thank you very much for your answer. It’s basically a generator to ozone water. Since we have some moisture return in the system, it´s not dry (I think it is the cause of damage to Viton and EPDM seal). Concentration 80 mg/L and temperature about 30ºC.

  32. Hi,
    We are having more issue with particles in our ozone gas supply system.
    On the ozone loop there are check valves installed.
    Initially we had Viton poppet check valves, after Neoprene poppets. both have led to particle issues.
    O3 concentration = 225 g/m3

    what type of material would you recommend for the check valves or will we always face issues with them so better to periodically change the check valve as a preventative action?

    Thank you

  33. Pingback: Ozone: Is it in Your Toolbox? – WCP Digital Guide Sample

  34. Pingback: Ozone: Is it in Your Toolbox? – Oxidation Technologies News

  35. Hi.
    Will brass withstand ozone water? Will using DZR brass make any difference?
    What PPM would you suggest as a maximum for brass?

    1. Brass will hold up to ozone quite well. However, there will be a reaction and the brass will eliminate some ozone from the water, this is undesirable. Also, if ozone levels above 2 ppm are used long-term dramatic degradation of the brass will be noticed after time.

  36. Hi,

    can you tell me what would be effect of ozone to stone wool (mineral wool, soda or basalt melted fibers cured with formaldehyde resin used in thermal insulation)? Those materials often have some smell that one can describe as “cat pee” and the smell is readily removed with ozone gaz upon treatment; but can the same gas disintegrate the material by damaging the curing formaldehyde resin?

    1. Ozone can degrade most of the materials you list. However, the level of ozone needed to degrade the products is vastly higher than the level of ozone needed to remove the odor in gas phase. Therefore, with proper control of ozone gas levels using ozone gas to eliminate the odor should be safe.

      In an ideal world, there is no ozone gas residual in the air, and no odor. Ozone gas eliminated the odor and was completely consumed in the process. While that level of control is practically impossible, it is realistic to maintain a nearly odor free environment, with safe levels of ozone for your other rproducts.

  37. Hi Joel, thank you for the informative posts. We purchased a few of these little devices (https://www.amazon.com/gp/product/B0B3DJDLVC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) and have placed them in bathrooms and a walk-in closet. We are not sure what concentration of ozone will result from continuous use on the highest output in these spaces (doors left open)? Would you foresee any damage to mirrors or items normally found in a closet? Thank you in advance!

  38. I have a home cigar lounge in a lean to on my metal garage. I also have rubber flooring (made from recycled tires) and galvanized/galvalume ceiling and wall. I also have an electric cigar humidor (sealed with a rubber or silicone seal at the door). Will a small ozone generator with occasional use for odor mitigation damage these materials? Thank you!

    1. Jared,
      In a perfect world there would be no “smoke” or odor in the air, and no ozone in the air. The ozone produced is perfect for the level of carbon compounds it is oxidizing. I realize that is impossible, but that is the goal. With that in mind, yes, the flooring and all materials should be fine. Just keep ozone levels low, if you can smell the ozone over the cigar odor, there is too much ozone.

  39. Hi,

    I supply the Viton O-ring of pump for ozone water 0.4 ppm. After appro. 6 months, the O-ring is oxidized and damaged.
    Hope you have the experience for this case and give me some advice.

    Thank you.

    1. Viton should be fine with ozone levels of 0.4 ppm over the long-term. My guess is that either the o-ring is of poor quality, the Viton itself is poor quality, or the o-ring construction was poor from the factor. Or, there is somethig else in the water reacting with the ozone or o-ring itself.

  40. Hi. Thank you for the very resourceful data and your very kind feedback.

    Do you have any data for Polybutene against ozone, especially ozone water?

    Thank you in advance.

  41. Two questions. One, would LLDPE be expected to perform similarly to LDPE (C=Fair) with respect to ozone resistance? Two, a resistance rating of C, or even B, would mean that at some point a plastic tubing product with that ozone rating would eventually be expected to degrade to an unserviceable condition, correct?

  42. There are fiberglass single person steam units used for health improvement where people add low concentration of ozone gas. I don’t know what fiberglass is actually made out of.

    But i’ve seen some cheaper chinese cabins made of acrylic, and wondering if acrylic would be safe to use in this application.

    Thanks for you consideration

    1. The levels of ozone are rather low in these applications. Don’t be concerned with that.
      The seals and gaskets are a bigger question.
      I would stay away from anything made in China as they are not reliable on what materials would be used. In any case, focus on rubber gaskets, seals, ect.

  43. A Polypropylene Bio Ball trickle filter receiving ozonated fresh water at 2 ppm at the entry to the contact chamber and a 3 minute duration. Water then is vented to a low volatile spray into a trickle filter. Planning to use nylon mesh bags to contain Bio Balls for ease of cleaning. Is Nylon acceptable? Is cotton an alternative? Other mesh laundry bag material alternative ?

  44. Hello,
    We just purchased a Aeroqual monitor so we can measure the amount of O3 in our electrical rooms. We know the human exposure limits but cannot find specific information concerning ppb or ppm of O3 that is safe for rubber coating on wires. Can you give us some guidelines for exposure limits to rubber?

    1. It would be our recommendation to keep ozone levels in the room to human safety levels.
      Most all the wires, rubber parts, and components susceptible to oxidation are tested to ASTM testing standards
      These testing standards are simulating near human safety levels of ozone oxidation to these components. Therefore, I would be confident most components can tolerate human safety levels of ozone exposure.

  45. Thank you for an excellent report, and responses to so many questions.

    Can you give any feedback about the performance of Phynox (aka Elgiloy) Cobalt Alloy when exposed to Ozone please?

  46. Dear sir, do you have any information regarding the compatibility of ozone in water solution and Polyacrylonitrile (PAN)

    Thanks a lot and regards

    Michel

    1. In what context specifically?
      We were recently asked to test the use of ozone to remove Acrylonitrile from water. Ozone was successful at breaking down the acrylonitrile creating some Cyanide as a by-produce from the reaction. Subsequently ozone was also able to break down the cyanide and bring both acrylonitrile and cyanide levels in water to 0.
      Based on the fact that Polyacrylonitrile is a polymerization of acrylonitrile I would assume that ozone will also oxidize this. But again, in what context and at what levels of each?

  47. I want to use a Ozon generator to sanitize a 100 gallon cold plunge tub made out of LDPE with 50 gallons of water circulating inside with a. Chiller and pump. Is a level for the Ozon that would be considered safe to LDPE wall of the tub?

    1. Yes, the levels of ozone required for water disinfection in this application will cause no harm to the tank itself. In fact we have seen tanks of these materials used for many years in water treatment applications in industry at much higher ozone levels.

  48. I want to use a 25 mg/L Ozone generator in a PVC bubble pump tube under the water to sanitize a pool (300 qm water) , that is made with PVC liner and wood under the water, circulating. It will affect the PVC liner? It will extract ozone lignin from wood that is under the water immerse?

  49. How much ozone concentration will have a serious impact on fabrics and plastics? Can I use ozone in the room for 2 hours to kill mites with a concentration of 40ppm? Will 2 hours affect the surrounding materials? Not used often!

    1. Damage done by ozone would be a factor of C/T values, concentration and time. More time, or more ozone concentration would affect items (and people) to a greater degree.
      Your time window is very short (2 hours) however, your ozone concentration is fairly high (40 ppm). I would think this would be safe for a few cycles, but will begin to loosen elastics, and discolor items after a few cycles of this.
      Verify your ozone level, 40 ppm sounds high for such treatment. Most pack-out rooms for example operate at 2-5 ppm at the top end.

  50. Hi Joel,
    Could you please comment on the suitability of wet (dissolved) ozone used at 3.0ppm with FKM (a form of Viton)?
    Reading through your prior responses, EPDM is not suitable; PTFE would be.

  51. I would like to know if Silicon rubber is good to be used in the seal material in a water treatment plant having residual ozone of 4 ppm in water. Does anyone have any similar experience of applying silicon rubber in similar types of application.

  52. Hi I did an ozone treatment to my homes bedrooms and used an Amazon knock off that produces 30000 mg I believe . Now that I’m done I started to get concerned because I let it run for 90 min in each room due to lack of information. I am getting a little worried I might of hurt my house wiring or other surfaces. I aired the rooms immediately after treatment and used fans with all windows open the next day. I’ve read some articles that say it can destroy wire coatings and make materials release gases. It’s been about a week and the smell in my home is just a clean slight chlorine almost undetectable. If you think there are any concerns can you let me know. Thanks

    1. Based on the 90-minute time frame you stated, I presume very little, if anything was accomplished or altered using that ozone generator.
      If the ozone odor goes away I would not have any concerns.

  53. It am moving into an apartment in which the frong loading washer and dryer are HEAVILY contaminated with really strong, toxic-fragrance odors. I have severe fragrance allergies and systemic mastocyctosis. I want to get these odors OUT! But the washing machine has the metal drums and rubber gaskets etc and probably other small plastic parts inside the drums. Would it be safe to place the ozone machine directly inside the drum of the washer (and then separately, the dryer) and run it for an hour or so? The link below is the machine I have. Just really want to get the fragrance out. Thank you!

    https://bigeasymart.com/product/enerzen-ozone-generator-11000mg-industrial-o3-air-purifier-deodorizer-11000mg-black/?gad_source=1&gclid=CjwKCAiAtt2tBhBDEiwALZuhADVQN3Y2xMAovQcqQgUXp3nTmlxhAQlxA_JH5Fo1Hz3bXl2wywTTZhoCj4AQAvD_BwE

  54. What would you recommend for an inexpensive steam sauna unit that is ozone-resistant?

    The prices on fiberglass sauna cabins are insane now, well over 6 or $7k.

      1. the nice ones are made of fiberglass since it’s ozone resistant. Your options are anything that is ozone resistant. I was considering some sort of wooden one but I’m not sure if they would be ozone resistant enough.

        This is the type of unit i’m talking about but too expensive

        https://www.promolife.com/new-steam-sauna

        it’s just a fiberglass shell with a steam unit built in. ozone is piped in via external generator.

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