Food-Grade Material: Our oxygen absorbers are made from food-grade materials and have passed strict food safety testing, ensuring they can be safely stored with food without producing unpleasant odors often found in inferior 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 containers properly. Unlike many other oxygen absorbers that activate quickly, ours maintain effectiveness for up to 5 hours during the sealing process, allowing full utilization without premature activation. Reduced Waste: Each pack contains 10 individually sealed oxygen absorbers, providing convenience and reducing waste. This design allows you to use only what you need while keeping the remaining packets protected and effective. It eliminates the need to reseal large bulk packages, minimizing the risk of exposure and wasted product. Wide Range of Uses: This set includes 100 pieces (10 packs of 10) of 200cc oxygen absorbers, ideal for use with mylar bags, canning lids, and other airtight containers. Suitable for preserving dry foods such as cookies, snacks, spices, cereals, flour, pasta, and more. Note: Oxygen absorbers remove oxygen from the air inside sealed containers, which typically makes up about 21% of the atmosphere. For optimal results, ensure proper container sealing and use the recommended number of absorbers based on container size and food volume. We are committed to providing high-quality products and excellent customer service. If you have any questions or concerns about this product, please contact us directly. We respond within 24 hours and strive to resolve any issues promptly.