Food-Grade Material: Our oxygen absorbers are made from food-grade material and have passed strict food safety testing, ensuring they can be safely stored with food without emitting unpleasant odors commonly found in lower-quality products. They help preserve the original taste of your food. Professional Slow-Absorbing Design: Our oxygen absorbers feature a slow-absorption design, giving you ample time to seal your food storage containers effectively. Unlike fast-acting absorbers that may lose effectiveness during the sealing process, ours maintain their performance for up to 5 hours, allowing sufficient time for use while still providing reliable oxygen removal. Reduced Waste: Each pack contains 10 individually sealed oxygen absorbers, making it easy to use only what you need. This design eliminates the need to reseal large packages after opening, reducing the risk of exposing unused absorbers to air and moisture. The convenient individual packaging helps prevent waste and ensures long-term effectiveness. Wide Range of Uses: This set includes 100 pieces (10 packs of 10) of 200cc oxygen absorbers, suitable for use with most mylar bags, canning lids, and other airtight containers. Ideal for preserving dry foods such as cookies, snacks, spices, cereals, flour, pasta, and more. Note: Oxygen makes up approximately 21% of air volume, and proper usage requires matching the absorber capacity to the container size for optimal results. We aim to provide high-quality products and excellent service to enhance your shopping experience. If you have any questions or concerns about this product, please directly. We respond within 24 hours and will work to resolve any issues promptly.