This 30mL (1oz) natural HDPE narrow-mouth packaging bottle comes with a polypropylene closure. It is supplied in a rigid, lint-free shrink-wrapped polyethylene tray. The bottle is ready to feed into filling lines for various reagents, and can be filled directly in the tray. Leakproof. Tray Packed. Bottle Material: High-Density Polyethylene (HDPE). Bottle Color: Natural. Neck Type: Narrow Mouth. Closure Material: Polypropylene (PP). Height With Closure: 61mm. Height Without Closure: 58mm. Outer Diameter: 34mm. Neck Inner Diameter: 14mm. Closure Size: 20mm. Neck Finish: 20-415. Capacity: 30mL (1oz). Nalgene® #: 322089-0001.