Ensure your samples are securely sealed with the NALGENE 342825-1111 Amber Closures. Designed specifically for NALGENE micro packaging vials, these closures are made from high-quality PPCO material, providing excellent chemical resistance. Each closure is sterile, making them ideal for laboratory use where contamination is a concern. The amber color protects light-sensitive samples, ensuring their integrity. Easy to use and compatible with various NALGENE vials, these closures are a reliable choice for researchers seeking quality and convenience in their sample storage solutions.