Introducing the Nalge Nunc Square Laboratory Bottles! This pack of four narrow mouth bottles is crafted from durable polycarbonate, ensuring excellent clarity and chemical resistance. Each bottle has a square design that maximizes storage efficiency while minimizing space. The narrow mouth allows for easy pouring and precise measurements, making it ideal for lab use. With a generous capacity of 1000 mL, these bottles are perfect for storing liquids, samples, or reagents. Trust NALGENE for reliable quality and performance in your laboratory needs!