Introducing the Nalge Nunc Closures, designed specifically for NALGENE Micro Packaging Vials. These closures are made from high-quality PPCO material, ensuring durability and a secure fit. Each closure is sterile, making them ideal for laboratory and medical applications where contamination is a concern. The NALGENE 342825-0113 Amber Closures provide an added layer of protection against light, preserving the integrity of your samples. With their easy-to-use design, these closures are perfect for anyone looking to maintain the quality and safety of their stored materials. Upgrade your vials with these reliable closures today!