How to: DIY Oxygen Absorbers for Food Storage
Posted on Sep 22, 2010 in - Food & Recipes, Emergency Preparedness & SurvivalSource: Cordite Country
(edited slightly for content and spelling)
Most commercial oxygen absorbers are nothing more than fine iron powder mixed with a polymer grain to allow air circulation through the powder – the rusting of the iron powder depletes the container’s contents of oxygen. It’s that simple. It’s also very easy to replicate that process.
Materials:
- Steel Wool ‘0000′ superfine (don’t use “SOS” pads)
- Salt (table salt is fine)
- Paper towels
- Stapler
Depending on the container size, take a wad of steel wool and lay it on a open paper towel. Sprinkle table salt over the steel wool and work it into the fibers. Then fold the towel over and staple it into an envelope shape. That’s it!
The salt’s acidity activates corrosion of the fine steel wool and the rusting of the steel absorbs oxygen in the container. Just leave a wad of steel wool outside overnight to see this process in fast forward … you don’t even need the salt for that experiment.
Keep all your unused DIY Oxygen Absorbers in air-tight freezer bags until you need them.
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Very cool – I will be trying this out myself when I get home. Thanks for sharing the info!
Great! Have been searching to purchase oxygen absorbers in smaller qty packs to utilize within the time frame necessary for the absorbers to be effective. Thanks for sharing and can’t wait to try this out.
BTW, Daniel have you tried this out yet?
Do you have any size ratio for wool vs. container? “A wad” of wood “depending on” container size is a little too broad for effective use…
I know that you can buy Iron powered at any ceramics supply house. It is called RIO or red iron oxide. I imagine that the black iron oxide is best. but just maybe this is the end result of the binding process and will not work I have no idea how to test it’s effectiveness.