We are offering Dewar Flasks, which are used for short-term storage of ice water, dry ice-solvent and liquid nitrogen. These are chemical resistant HDPE double walls are filled with CFC free urethane foam and withstand temperatures from -196°C to +100°C. Our range is available as per the requirements and applications of various sizes and capacities.

Features

• Vented, insulated cover
• All sizes feature moulded-in ribs, cover securing tabs, pour spout and bottom grip area for added safety
• Convenient bail-type handle

Our most popular standard product is a foam vessel that holds 800 ml of liquid nitrogen. The shape of the foam dewar is circular, with a protruding handle, so that it resembles a large teardrop. Each bowl shaped vessel comes with a matching foam lid to insulate the contents from ambient air. The dimensions of the cylindrical cavity in this standard size vessel are 5.8 inches in diameter by 2.8 inches deep.

For custom designed foam dewars, please contact us for more information. We would like to assist you with any special cryogenic requirements that you may have for research, industry or education.

Our standard foam vessel, designed to replace a low-profile Dewar, was originally developed at the Advanced Light Source of the Lawrence Berkeley National Laboratory, and is made of a durable and chemically inert foam with excellent insulating properties. Its patent pending design makes the foam vessel easier to handle and safer to use than a traditional low profile glass Dewar. Also, because of its lower thermal mass, a foam vessel will cause less liquid nitrogen boiloff when it is filled. It also will accumulate less frost during regular use. the end result is that less LN is consumed.