what cc oxygen absorbers do i need

3 min read 26-12-2024

Meta Description: Determining the right size oxygen absorber for your food storage needs can be tricky. This guide breaks down how to calculate the cubic centimeters (cc) of oxygen absorber you need, considering package size, food type, and desired shelf life. Learn how to choose the best oxygen absorber for optimal food preservation!

Many people are turning to oxygen absorbers to extend the shelf life of their food. These small packets effectively remove oxygen from sealed containers, preventing spoilage and maintaining food quality. But choosing the right size can feel overwhelming. This guide breaks down how to determine the correct cubic centimeters (cc) of oxygen absorber needed for your specific application.

Understanding Oxygen Absorbers and Their CC Ratings

Oxygen absorbers, often called oxygen scavengers, are packets containing iron powder that reacts with oxygen. The "cc" rating refers to the cubic centimeters of oxygen a packet can absorb. A higher cc rating means the absorber can handle a larger package or more oxygen-sensitive food.

Factors Affecting Oxygen Absorber Selection

Several key factors determine the appropriate cc rating:

Package Volume: The size of the container or bag holding your food is crucial. You need enough absorber to remove oxygen from the entire space.
Food Type: Different foods have varying oxygen sensitivities. High-moisture foods, like fruits and vegetables, require more aggressive oxygen removal than dry goods.
Desired Shelf Life: Longer shelf life necessitates a higher cc rating. This ensures complete oxygen removal throughout the desired storage period.
Headspace: Remember that the oxygen absorber doesn't take up the entire volume. Consider the headspace (empty space) in your packaging.

Calculating the Required CC Rating

Precise calculation requires considering all factors. Several methods exist, but a common approach involves using a combination of package volume and a safety factor:

Method 1: Simple Volume-Based Calculation

Measure Package Volume: Determine the internal volume (in cubic centimeters) of your packaging. You can do this by multiplying length, width, and height.
Determine Oxygen Absorber Ratio: A general rule of thumb is to use 1cc of oxygen absorber for every 100cc of package volume. However, for particularly sensitive foods or long shelf life, you might increase this ratio to 1:50 or even 1:30.
Calculate Required CC: Multiply your package volume by your chosen ratio. This is a rough estimate.

Example: A 1000cc container using a 1:100 ratio would require a 10cc oxygen absorber.

Method 2: Considering Food Type and Shelf Life

This method offers greater precision.

Consult a Chart: Many manufacturers provide charts correlating food type, desired shelf life, and recommended oxygen absorber size.
Adjust for Headspace: Factor in the headspace. The absorber won't fully absorb the headspace volume, but it's better to slightly overestimate.
Safety Factor: Always add a safety margin. It's better to have slightly too much oxygen absorption than not enough.

Method 3: Using an Oxygen Absorber Calculator

Many websites offer online calculators that simplify this process. You just input your package dimensions and desired shelf life; the calculator will generate the necessary cc rating.

Frequently Asked Questions

Q: What happens if I use too many oxygen absorbers?

A: Using more oxygen absorbers than necessary doesn't significantly harm your food. It will simply be more effective in removing the oxygen. However, there's no need to overspend.

Q: What happens if I use too few oxygen absorbers?

A: This will leave residual oxygen, potentially leading to spoilage and reduced shelf life. This is the scenario you want to avoid.

Q: Where can I buy oxygen absorbers?

A: Oxygen absorbers are readily available online from various retailers specializing in food preservation supplies. You can also find them at some specialty grocery stores.

Conclusion

Choosing the correct cc of oxygen absorber is crucial for maximizing food preservation. By carefully considering package volume, food type, desired shelf life, and headspace, you can ensure your food stays fresh and safe for as long as possible. Remember to always err on the side of caution and use slightly more than you calculate to be safe. If you are unsure, consult with a food preservation expert or use an oxygen absorber calculator for precise results.