Best Oxygen Absorbers for Food Storage
When it comes to food storage, you’re going to need some stuff. And we’re not just talking about food- you need food storage containers, various ways to preserve the food, and shelves and racks to store the food. But one little workhorse stands out when it comes to increasing and maintaining shelf life: the oxygen absorber. And the best oxygen absorbers will make it all reliable and easy. There are several options to consider when it comes to oxygen absorbers: absorption time, absorbent material, versatility, etc.
This is where we come in. We’ve researched the best oxygen absorbers, tested each of them, and now the results are in: the overall best, a budget option, and an upgrade option. If you need to keep your food from spoiling over the long term, one of our recommendations will keep you fed.
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In this latest update of the best oxygen absorbers, more pictures and testing data have been added. When you buy through our links, we may earn a commission. Disclosure»
Best Oxygen Absorber
FreshUs
Small, Lightweight, and Effective
Slightly smaller and lighter than the competition but equally effective with higher quality standards.
*Price at time of publishing; check for price changes or sales.
Stash your food like a pro with the lightest and smallest effective oxygen removal solution for your food storage. This makes it ideal for homemade MREs or any other food you preserve for on-the-go use.
Specifications
- 300cc packets
- 10 bags of 10 packets (100 total)
- Oxygen indicator in each bag (10)
- 1.6 pounds total weight
These absorbers are competitively priced and used by many recognized brands- you’ve probably even pulled some out of a pack of jerky before. They are packed 10 into a bag with oxygen indicators, and they absorb oxygen relatively slowly, which can be forgiving when you are packing up your food.
Trusted by industry professionals, FreshUs Oxygen Absorbers are the best choice out of all of the competition.
Budget Oxygen Absorber
Auhanth
Single-use, Inexpensive, and Effective
A budget absorber gets the job done with a little more planning since there are more packets per bag.
*Price at time of publishing; check for price changes or sales.
The main drawback of these budget absorbers is that they are packed in bulk, so you will need to be able to package your food quickly and/or reseal them in a small airtight container. They are bulkier than some of our other picks and absorb oxygen relatively quickly.
Specifications
- 300cc packets
- 5 bags of 20 packets (100 total)
- Oxygen indicator in each bag (5)
- 2 pounds total weight
Pick up Auhanth Oxygen Absorbers to effectively preserve your food on a budget.
Upgrade Oxygen Absorber
Wallaby
Resealable, High-Quality, and Long Lasting
The brand to beat for food storage materials makes it easy with the highest quality oxygen absorbers.
*Price at time of publishing; check for price changes or sales.
Also available to buy at Wallaby. Use code TRUEPREP for $5 off.
Wallaby makes all food storage easy with their solutions, and oxygen absorbers are no exception. You can easily match up the absorber size (cc) with their vacuum bags and mylar heat seal bags with their convenient product table.
Specifications
- Resealable zippered storage bag
- 300cc packets
- 10 bags of 10 packets (100 total)
- Oxygen indicator in each bag (10)
- 1.8 pounds total weight
They also thought through the packaging, with a resealable bulk pack and ten individual bags inside with oxygen indicators. The quality is great, and they have an awesome customer service team if you have any issues (which we found rare in our research).
If you are looking for the best of the best, pick up Wallaby Oxygen Absorbers to make long-term food storage easy.
Comparison Table
| Oxygen Absorber | Recommendation | Price* | Quantity | Packet Size |
|---|---|---|---|---|
| FreshUS | Best Overall | $11 | 100 | 300cc |
| Auhanth | Best for Budgets | $10 | 100 | 300cc |
| Wallaby | Best for High-Value Storage | $18 | 100 | 300cc |
The Oxygen Absorbers We Compared
Our research narrowed the field down to several absorbers that we tested: FreshUS, Wallaby, OxyFree, Harvest Right, Oxy-Guard, and more.
You can see our full list of review criteria below in the What to Look For section, with an explanation for each.
We focused on food-grade oxygen absorbers exclusively and narrowed down our testing to a common size (300cc) for comparison purposes. Most of the brands we encountered offer a wide range of sizes for a variety of applications. We did not consider desiccants, since those absorb moisture (not oxygen) and are for different applications.
We’re always looking for new and better equipment, so if you have an oxygen absorber that you swear by, let us know in the comments. We review most of our tested gear annually, so we can always get it in the next roundup and see if it makes the cut, and we can see if it will beat out our top picks.
What to Look For
The best oxygen absorbers have several important features to look for:
- Value
- Absorbent Material
- Absorption Time
- Size & Weight
- Versatility
When you get the right blend of these, you can find a reliable absorber that will give your sealed food an enormous shelf life. Below, we break down what each of these features means for the oxygen absorbers that set themselves apart.
Value: Cost vs. Benefit
The amount of money you spend on something like a bag of oxygen absorbers shouldn’t blow out your entire budget. Don’t go overspend or overdo it. Budget according to your risk and your needs rather than just spending lavishly.
On the flip side, you don’t want to go too cheap or just plain get the wrong thing. A bunch of silica gel desiccants you save from around the house are completely the wrong thing and will not save you money when they let your food spoil. Get the correct tool for the job.
You never want to spend too much money on one resource, especially something like food storage accessories. It’s better to diversify your preparedness gear to make sure you are covered for a wide range of scenarios. There is a sweet spot where you get high value with not too high a price, which is where our top pick sits.
Absorbent Material
The main way oxygen absorbers work is with a permeable package containing iron powder.
The iron powder has a lot of surface area, depending on how fine it is, and the oxygen causes a chemical reaction with the iron that we are all familiar with: rust. As the iron ‘oxidizes’ and rusts, it traps oxygen.
All oxygen absorbers use this, but have varying quality in manufacturing and varying sizes of the iron powder. There can also be additives to increase or decrease the iron powder exposure to affect absorption time and capacity. This is also something to consider with the absorber pouch material, through which oxygen has to pass before it can be trapped by the iron.
Absorption Time
Oxygen absorbers take about 4 hours to absorb their rated oxygen when they are sealed- faster when left in the open.
Different types of pouch material can affect this absorption time since it can let oxygen in faster or slower based on the material’s permeability.
Size & Weight
With oxygen absorbers so light, thin, and small, most people don’t consider the size and weight unless they are mass-producing sealed food with low water content.
Even still, lighter, thinner, and smaller packet oxygen absorbers are slightly better for transporting, whether you are doing it in mass or have a few sealed in your bug out bag MREs.
Versatility
Versatility with oxygen absorbers is tied to how they are packaged in bulk. Small-capacity oxygen absorbers (like 100cc) are versatile because they can contribute to a wide range of storage sizes. They work with small sealed cans and mylar bags, and can also work with food storage buckets if you add enough of them to cover the volume.
The downside, of course, is that they are more expensive and can be tedious to sift through when you actually need the food. Getting a range of oxygen absorber sizes can help with this and is the optimal solution.
How to Use Oxygen Absorbers
Oxygen absorbers are simple to use and just require a little planning in order to put the correct size with your food (or absorbers that total the correct size).
WARNING: Do not use oxygen absorbers with high-humidity foods (>10%) due to the risk of botulism toxins.
Here is the Provident Prepper duo showing how to use our upgrade pick:
Who Needs Oxygen Absorbers?
Oxygen absorbers are cheap solutions to extend food shelf life. Everyone needs food stability, and stored food with a long shelf life is a major component of that.
Oxygen absorbers should be considered for your food storage, which is also an integral part of the broad:
They are especially useful if you have bulk food storage, a vacuum sealer, a heat sealer, a dehydrator, and/or a freeze dryer.
How We Review Products: We research thoroughly before selecting the best products to review. We have vast prepping and survival experience and bring in outside experts when needed. Hours on end are spent testing gear in stressful conditions and using specialized testing gear to verify claims. We assign performance criteria and impartially rate each tested item. Learn more about how we test.
Sources & References
All of our experience and the testing we do to determine the best oxygen absorber is useless without listing our research sources and references. We leaned on these for the book knowledge that we paired with our hands-on testing and practical military and prepping experience:
Cichello, S. (2015). Oxygen absorbers in food preservation: a review. Journal of Food Science and Technology. Volume 52. Pages 1889 – 1895. (Source)
Mexis, S., et al. (2012). Shelf life extension of ground chicken meat using an oxygen absorber and a citrus extract. LWT – Food Science and Technology. Volume 49. Issue 1. Pages 21 – 27. (Source)
Berenzon, S., et al. (1998). Oxygen Absorbers for Extension of Crackers Shelf-life. LWT – Food Science and Technology. Volume 31. Issue 1. Pages 1 – 5. (Source)
Conclusion
Food storage is a continuous journey, and oxygen absorbers are a key resource that can help you on that journey. Getting the right ones for the job can take a little know-how upfront, but they are easy to use once you figure out how much food you are storing, your storage method, and which containers you will use.
Here are a few related articles our readers have also found helpful:
- The Best Food to Dehydrate for Long Term Survival Storage
- The Best Freeze Dryer for Drying Food at Home
- Survival Food List | Pantry Stockpile Plan and Checklist
See more of our expert-written guides, resources, and reviews in your search results – add TruePrepper as a preferred source.
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Hi! I read there are 2 types of oxygen absorbers b & d i believe? One is supposed to be better for food that has some humidity (raisins) but should also be paired with a silica packet, have you heard this at all? Im just starting out!!
I’ve seen what you’re talking about but am unaware of any absorbers that are ‘type b’ or require high humidity to work. Most absorbers include the sodium chloride to help activate the iron oxide at very low humidity levels.
Don’t combine silica packets and oxygen absorbers- they work against each other. Absorbers are fine for storing raisins. Hope this helps!
Great insights on using oxygen absorbers! In India, we also rely on Oxysorb for long-term food storage — they work perfectly for keeping dry foods fresh and moisture-free.