What Is an Oxygen Absorber?
An oxygen absorber is a small packet containing iron powder or other reactive materials that remove oxygen from a sealed environment. By reducing oxygen levels to less than 0.01%, these packets prevent mold, bacteria, and insect growth while protecting food from oxidation and nutrient loss.
How Oxygen Absorbers Work
Inside each packet, finely divided iron reacts with oxygen in the air, forming iron oxide (rust). This chemical reaction effectively removes oxygen from storage containers, creating a near-zero oxygen environment. This process helps keep your food fresh, flavorful, and safe for long-term storage.
What Size Oxygen Absorber for a 1 Gallon Mylar Bag?
For a 1-gallon Mylar bag, the general recommendation is to use 300cc oxygen absorbers - typically 1 to 2 packets per bag. Dense foods like rice, wheat, or flour trap less air and require fewer absorbers, while light foods such as pasta or beans trap more air and need slightly more.
Recommended Oxygen Absorber Sizes
• Dense Foods (Rice, Wheat, Flour): 1–2 packs of 300cc oxygen absorbers per 1-gallon bag
• Less Dense Foods (Pasta, Beans): 2 packs of 300cc oxygen absorbers per 1-gallon bag
It's always safe to use slightly more oxygen absorbers - using extra won't harm your food.
Things to Remember
• 1 cc = 1 ml; 1000 ml = 1 liter; 3.78 liters = 1 gallon.
• The above numbers are general guidelines; you may need more or fewer packets depending on local humidity.
• Always store unused oxygen absorbers in airtight containers to maintain their effectiveness.
About Yangzhou Yome Stayfresh Technology Co., Ltd
Yangzhou Yome Stayfresh Technology Co., Ltd is a professional manufacturer specializing in oxygen absorbers, desiccants, and food preservation solutions. With years of expertise and advanced technology, we are dedicated to providing reliable, safe, and eco-friendly preservation products worldwide. Learn more at https://www.oxygenabsorber.com/.
