Introducing the NALGENE 342825-0111 Amber Closures, designed specifically for NALGENE micro packaging vials. These closures are made from high-quality PPCO material, ensuring a secure and sterile seal for your samples. The amber color provides excellent UV protection, safeguarding light-sensitive contents. Each closure is pre-sterilized, making them ideal for laboratory use and sensitive applications. Easy to use and compatible with various NALGENE vials, these closures are a reliable choice for researchers needing precision and safety in their work. Elevate your sample storage with these dependable closures!