Top 3 materials which are Totally SAFE for Ozone treatment.

Since we know which plastics and metals are unsafe to be used with Ozone, lets list those that are perfectly fine. When buying the container you should double check what it is made of, sadly most of the office, cloths storage boxes will be unusable. Most of the websites don’t even say what kind of plastic do they sell, if you are lucky enough they will mention that is it BPA free but nothing more. It is advisable to look for food storage containers as those are usually safer and made from food grade materials. So which ozone safe material should you buy?

Glass.

Glass has got an Excellent A rating which means that ozone has got no effect on it and it will last indefinitely. Pros are that is won’t scratch easily when washed. It is transparent which makes the process visually attractive. Unfortunately it might be quite heavy and difficult to handle. It might work if you only ozonate small batches like box of strawberry’s and would definitely work when only ozonating a water, let say a pint or two (you can use a flower vase for that and cover it with cling film). The trouble come when you want you disinfect your weekly shopping, bunch of kale, celery sticks, few apples, bag of carrots…you’ll need something bigger and easier to empty.

Stainless Steel.

Polycarbonate.

Here you can find the table of materials and how they perform with ozone:

 RatingDescription
AExcellentOzone has **no effect** on these materials. They will last indefinitely.
BGoodOzone has minor effect on these materials. Prolonged use with high concentrations of ozone will break down or corrode these materials beyond usefulness.
CFairOzone will break down these materials within weeks of use. Prolonged use with any ozone concentration will break down or corrode these materials beyond usefulness.
DPoorOzone will break down these materials within days or even hours of use. These materials are not recommended for any use with ozone.
MaterialRatingMaterialRating
ABS PlasticBLDPEB
Acetal (Delrin®)CMagnesiumD
Acrylic (Perspex®)BMonelC
AluminumC (wet ozone) / B (dry ozone)Natural RubberD
BrassBNeopreneC
BronzeBNylonD
Buna-N (Nitrile)DPEEKA
ButylAPolyacrylateB
Cast IronCPolyamide (PA)C
ChemrazAPolycarbonateA
CopperBPolyethelyneB
CPVCA (does get brittle)PolypropyleneC
Cross-Linked Polyethylene (PEX)APolypropylene (glass-filled) (GFPP)C
Durachlor-51APolysulfideB
EPDMC (wet ozone) / B (dry ozone)Polyurethane, MillableA
EPRAPVCA (wet ozone) / B (dry ozone) – does get brittle
Ethylene-PropyleneAPVDF (Kynar)A
Fiber Reinforced Plastics (FRD)DSantopreneA
FlexeleneBSiliconeA
FluorosiliconeAStainless Steel – 304/316A
Galvanized SteelCStainless Steel – Other GradesB
GlassASteel (Mild)D
Hastelloy-C®APTFEA
HDPEATitaniumA
Hypalon®CTygonB
Hytrel®CVamacA
InconelAVitonA
KalrezAZincD
Kel-F (PCTFE)A  
https://ozonesolutions.com/blog/ozone-compatible-materials/

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