Oxygen Absorbers
Oxygen absorbers are deployed to remove oxygen in closed environments to keep products free of oxidation and spoilage. Their reaction takes place on a chemical basis in which iron powder combines with oxygen to form iron oxide, depleting oxygen. The process can be used to enhance the shelf life, particularly in food and pharmaceutical packaging. The effectiveness and rate of absorption are determined by the purity, particle size distribution, and reactivity of the iron powder used; thus, the performance of an oxygen absorber is affected directly by these factors.