This 30mL (1oz) natural low-density polyethylene (LDPE) narrow-mouth packaging bottle comes with a polypropylene closure. It has a robust construction for packaging use, with excellent impact and chemical resistance and clarity. The leakproof, translucent bottle is designed for storage, shipping, and packaging of liquids. LDPE is low in trace metal content and is an ideal material for trace metal analysis. Bulk Packed. Leakproof. Translucent. Bottle Material: Low-Density Polyethylene (LDPE). Neck Type: Narrow Mouth. Closure Material: Polypropylene. Height With Closure: 61mm. Outer Diameter: 34mm. Neck Inner Diameter: 14mm. Closure Size: 20mm. Neck Finish: 20-415. Capacity: 30mL (1oz). Nalgene® #: 312088-0001.