- Nalge 2103 series
- Suitable for shipping liquids
- Polypropylene screw closure
- Flexible with excellent impact resistance
- Leakproof
30 and 60 mL bottles have a 28 mm closure size; 125 mL bottles: 38 mm; 250 mL bottles: 43 mm; 500 mL bottles: 53 mm; 1,000 mL bottles: 63 mm.