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.

source: http://www.truthistreason.net/how-to-diy-oxygen-absorbers-for-food-storage

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