5 Vacuum-Packed S-Type 2000cc Oxygen Absorbers. Each packet absorbs 2000 cc's of oxygen, approximately the amount of oxygen in a 6 gallon-sized container filled with an item such as pinto beans. A Long-Term Food Storage Guide is included to help you determine the amount of absorption required by food type as well as directions for proper use and food storage tips. These S-Type oxygen absorbing packets are the most versatile, suitable for both moist and dry food storage. Whether you are storing food long-term, maintaining freshness short-term, or protecting pharmaceuticals or art, Pack Fresh Oxygen Absorbers provide the most effective protection from the damaging effects of oxygen as well as oxygen-dependent bacteria, mold, and bugs. IMPORTANT: Requires a properly sealed container that provides a high barrier to oxygen. Canning jars or heat-sealed, foil-lined bags are recommended for long-term storage. Unused packets may be stored in a similar container for later use. Plastic bags or containers may gradually let oxygen in, resulting in shorter protection times.Sold in the USA since 1992. 10 times more effective than vacuum-sealing at removing the oxygen that spoils food!. Safe and Non-Toxic. Satisfaction guaranteed. Free Long-Term Storage Guide Included.