Oxygen Absorbers 500cc

We recommend using food grade iron oxide oxygen absorbers, also known as deoxidisers, inside mylar bags for long term food storage.

Oxygen absorbers remove oxygen from inside sealed bags and containers to help prevent the growth of aerobic micro-organisms, mould, bacteria, and fungi, helping to prolong shelf life and protect stored food.

Different oxygen absorber sizes (cc ratings) are recommended depending on the size of the bag and the amount of air remaining inside the package.

Our oxygen absorbers are made by Dorency and contain iron powder with an oxygen absorption capacity approximately 3 times higher than the listed cc rating.

IN A BAG: Put your food or other items into your mylar bag.  Push as much air as you can out of the bag. Add the correct amount of oxygen absorbers to the bag and seal it straight away.  Some bags have a zip lock seal across them and some you will need to seal with heat, such as a vacuum sealer, or heat sealer. Some people even use irons or hair straighteners to seal mylar bags.

IN A CONTAINER: Put your food into your container.  Work out approx how much air is left in the container, add the appropriate amount of oxygen aborbers and seal the lid tightly.

Oxygen absorbers remove approximately 21% of the air inside a bag or container, as oxygen makes up roughly 21% of normal air.

General Formula

Container volume – food volume = residual air volume

Residual air volume × 0.21 = oxygen absorber size required

It is always better to slightly exceed the required oxygen absorber size rather than use too little. Using additional oxygen absorption capacity helps ensure your food remains properly protected during long-term storage.

Quick Conversions

• 1cc = 1ml
  
• 1000ml = 1 litre
  
• 3.78 litres = 1 gallon
  

Important Note

Different dried foods have different densities, meaning litres do not directly convert to the same weight in grams across all food types.

Always ensure food is properly dried before long-term storage.

Our Oxygen Absorbers are made by Dorency. They contain Iron Powder and have an oxygen absorbtion capacity 3 times more than the cc rating. 

• 50cc Oxygen Absorber – standard capacity 50 ml
• Dorency 50cc oxygen absorption capacity 150 ml each

50cc

• Standard Capacity: 50ml
  
• Oxygen Absorption Ability: ≥150ml
  
• Size: 40 × 30mm
  
• Weight: 1.21–1.37g
  

150cc

• Standard Capacity: 150ml
  
• Oxygen Absorption Ability: ≥450ml
  
• Size: 50 × 40mm
  
• Weight: 3.32–3.6g
  

300cc

• Standard Capacity: 300ml
  
• Oxygen Absorption Ability: ≥900ml
  
• Size: 60 × 45mm
  
• Weight: 6.46–7.08g
  

500cc

• Standard Capacity: 500ml
  
• Oxygen Absorption Ability: ≥1500ml
  
• Size: 60 × 60mm
  
• Weight: 10.68–11.71g

• Fresh and raw foods
• Dried and dehydrated foods
• Freeze dried meals
• Grains, rice, and pasta
• Herbs and spices
• Fish and seafood
• Jerky and biltong
• Powders and supplements
• Pet food
• Emergency food kits
• Medical supplies
• Documents, cash, and photos
• Electronics and tools

When used correctly with mylar bags, oxygen absorbers help protect contents from:

• Air and oxidation
• Moisture and vapour
• Light exposure
• Mould and bacteria growth
• Food spoilage
• Odours and insects
• Rust and corrosion
  

They also help preserve nutrients, flavour, and freshness for long term storage.

For long-term storage, we recommend using food grade oxygen absorbers inside your mylar bags before sealing.

To seal:

1. Fill the bag with your chosen product
   
2. Add the correct oxygen absorber size
   
3. Push excess air from the bag
   
4. Heat seal the top closure
   

Mylar bags can be sealed using:

• Heat sealers
• Vacuum sealers with seal function
• Hair straighteners
• Household irons
  

The resealable zip lock closure allows for multiple opening and resealing when long-term storage is not required.