1. Root Cause: Why Do Oxygen Absorbers “Fail”?

Many food manufacturers still experience mold or oxidation despite using oxygen absorbers. This is often not due to product failure, but fundamental errors in sizing  calculation. Traditional methods only consider initial oxygen inside the package, neglecting ongoing oxygen permeation through packaging material over the shelf life—the key factor leading to preservation failure.

 

2. Core Formula: Scientific Calculation, Precise Sizing

The deoxidizer sizing formula we consistently apply in client projects is:

 

Required Oxygen Absorption Capacity=

[(Package Air Volume − Product Volume) × 21%] +

[(Package Oxygen Transmission Rate × Target Shelf Life in Days × Package Surface Area) × Safety Factor]

 

Interpretation:

Part 1 (Initial Oxygen): Removes oxygen present at sealing (oxygen ≈ 21% of air).

 

Part 2 (Continuous Permeation): Offsets all oxygen permeating into the package throughout the shelf life. This is the decisive variable for long-term preservation, especially for products with longer shelf life or higher packaging permeability.

 

3. Application Example & Professional Support

For a product with a package oxygen transmission rate of 100 cc/m²· day and a target shelf life of 180 days, calculated permeation oxygen is often several times the initial oxygen. This explains why “experience-based  estimation” often leads to ineffective preservation.

 

As an oxygen absorber manufacturer with 26 years of industry experience, we offer:

1. Accurate oxygen transmission rate testing for packaging

2. Free sizing calculation and solution design based on the formula

3. Recommended absorber models suited to different product characteristics

We believe quality products must be paired with scientific solutions. If you need precise calculations or customized plans for your product, please contact us  via our official website. We will provide a complete preservation solution.