This narrow-mouth 4mL (1/8 ounce) high-density polyethylene (HDPE) Boston round bottle with a polypropylene closure is highly reliable and durable for long-term use. The leakproof bottle is ideal for storing shipping and packaging liquids and also suitable for everything from general lab use to storing critical high-value materials. It is manufactured from validated and controlled resins meeting a variety of food and pharmaceutical regulatory requirements. Rigid and translucent this bottle has excellent chemical resistance and can be used with most corrosives. Good for freezer storage to -100°C. Capacity: 4mL (1/8 ounce). Material: HDPE with a polypropylene closure. Closure size: 13mm. Nalgene #: 2002-9125.