FreshUs Oxygen Absorbers

The 2000cc size is generally intended for larger storage containers, such as 5-gallon buckets or large Mylar bags. If you are using smaller containers, you may need to use multiple smaller absorbers instead to ensure you aren't over-saturating the oxygen removal process.

Yes, FreshUs absorbers are FDA approved for direct food contact. The active ingredient, powdered iron oxide, is contained within a safe, non-toxic packet that prevents it from mixing with your food.

You don't have to, but they work perfectly in tandem. While vacuum sealing removes the bulk of the air, these absorbers are specifically designed to scrub the remaining oxygen down to less than 0.1%, which is a level vacuum sealing alone cannot achieve.

Oxygen absorbers begin working the moment they are exposed to air. To keep your extras fresh, seal them immediately in an airtight container or a small, heavy-duty Ziploc bag, squeezing out as much air as possible before closing.

No, they are completely inert and odorless. Their only job is to remove oxygen, which actually helps preserve the original taste, color, and nutritional profile of your food by preventing oxidation.