Harvest Right designs these oxygen absorbers for storing freeze-dried foods made using their Freeze Dryers. These 300CC oxygen absorbers reduce the residual oxygen inside food packaging to below 0.01%. Choose from either a 50-pack or a 100-pack below. Oxygen causes spoilage, color change, loss of nutrients, and loss of quality in your food. These absorbers protect packaged foods and other products from these problems. They also help prevent mold growth and insect activity inside of your stored foods. Harvest Right Oxygen Absorbers preserve your packaged foods without the need for additives or preservatives. They also eliminate the need for vacuum sealing. Pair them with Harvest Right Mylar Bags to store your freeze-dried foods for up to 25 years!