Introducing the Nalge Nunc Closures designed specifically for NALGENE Micro Packaging Vials. These closures are crafted from high-quality PPCO material, ensuring durability and a secure fit. Each closure is sterile, making them ideal for laboratory use and sensitive applications. The NALGENE 342825-0110 Amber Closures provide excellent protection against light, preserving the integrity of your samples. With a reliable sealing mechanism, these closures prevent contamination and leakage, giving you peace of mind in your experiments. Upgrade your lab supplies with these essential closures for optimal performance!