Nalgene 4150-2000 HDPE Dewar Flask Cryogenic LN2 Liquid Nitrogen 2000mL

Nalgene 4150-2000 HDPE Dewar Flask Cryogenic LN2 Liquid Nitrogen 2000mL

The Nalgene 4150-2000 is a 2000 mL all-plastic Dewar flask designed for cryogenic applications including liquid nitrogen (LN2) storage and handling. Unlike traditional glass Dewar flasks, this model uses chemical-resistant high-density polyethylene (HDPE) construction, eliminating the breakage risk associated with glass while maintaining effective thermal insulation. The double-wall design is filled with CFC-free urethane foam, providing the insulation needed for cryogenic media storage in everyday lab settings.

Specifications & What's Included

• Model: Nalgene 4150-2000
• Capacity: 2000 mL (2 L)
• Material: High-density polyethylene (HDPE), double-wall construction
• Insulation: CFC-free urethane foam fill between walls
• Temperature range: -196°C to +100°C (suitable for liquid nitrogen through hot bath use)
• Compatible media: Liquid nitrogen (LN2), dry ice solvents, hot baths
• All-plastic — no glass components
• Includes: Dewar flask body, vented lid, and bail handle
• Manufactured in the USA

Applications

Nalgene HDPE Dewar flasks like the 4150-2000 are standard equipment in scientific and research laboratories that work with cryogenic liquids. They are commonly used for storing and dispensing liquid nitrogen, transporting dry ice solvents, and maintaining temperature-sensitive samples during short-term handling. The all-plastic construction makes them especially practical in settings where glass breakage is a safety concern — such as teaching labs, field work, or high-traffic bench environments. They are also used for hot bath applications, making them a versatile thermal container across a broad temperature range. The 2-liter capacity suits routine LN2 dipping and sample preservation tasks in chemistry, biology, and materials science labs.