Containers for liquid nitrogen
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TR series liquid nitrogen dewars
Producer: Cryopal
Nr CAT:
Capacity: 12 L, 21 L, 26 L, 34 L, 60 L, 99 L, --
Scale: 17,5 kg, 28,5 kg, 34,5 kg, 43 kg, 70 kg, 110 kg, --
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Dewars for magnetic stirrers
Producer: KGW Isotherm
Nr CAT:
Capacity: ml, 600
Dimensions: Internal diameter [mm], 90
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Dewars with flat bottom
Producer: KGW Isotherm
Nr CAT:
Capacity: 150 ml, 250 ml, 450 ml, 650 ml, 850 ml, 1200 ml, 2100 ml
Scale: 0,3 kg, 0,4 kg, 0,5 kg, 0,6 kg, 0,9 kg, 1,2 kg, 1,8 kg
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Stainless steel dewars
Producer: KGW Isotherm
Nr CAT:
Capacity: 500 ml, 1000 ml, 2000 ml, 3000 ml, 6000 ml
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Cylindrical dewars
Producer: KGW Isotherm
Nr CAT:
Capacity: 100 ml, 200 ml, 300 ml, 450 ml, 500 ml, 750 ml, 1250 ml, 800 ml, 1200 ml, 1700 ml, 1000 ml, 1500 ml, 2100 ml, 2000 ml, 3200 ml, 4000 ml, 2500 ml, 5000 ml, 3000 ml, 8000 ml
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Dewars in the shape of a bowl
Producer: KGW Isotherm
Nr CAT:
Capacity: 80 ml, 120 ml, 260 ml, 400 ml, 800 ml, 1600 ml, 2700 ml, 5300 ml
Scale: 0,2 kg, 0,4 kg, 0,5 kg, 0,6 kg, 1,5 kg, 2,1 kg, 3,2 kg
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Large insulating Dewar vessels
Producer: KGW Isothermal
Nr CAT:
Capacity: 4 l, 7 l, 10 l, 14 l, 21 l, 28 l
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Apollo series liquid nitrogen dewars
Producer: Air Liquide
Nr CAT:
Capacity: 49,5 L, 99,2 L, 149,5 L, 198,5 L, 348 L
Scale: 85 kg, 145 kg, 204 kg, 266 kg, 450 kg
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Liquid nitrogen containers
Liquid nitrogen containers are designed to store and transport cryogenic substances at a temperature of about -196°C. Their design is based on double-walled vacuum insulation, which significantly reduces evaporation and allows to maintain stable operating conditions for a long time.
In practice, liquid nitrogen dewar is used in laboratories, medicine, cryotherapy and in industry, where the safe storage of biological samples and materials at very low temperatures is required.
Classification and application of specialized cryogenic vessels
Depending on the application, different containers for storing liquid nitrogen are distinguished:
- 3–6 liters – dermatology, local cryotherapy, treatment rooms
- 10 liters – physiotherapy, small research laboratories
- 30–50 litres – tissue banks, large laboratories, Froozer automatic systems
Smaller liquid nitrogen tanks are mobile and used in office work, while larger tanks serve as storage and logistics.
Construction and materials used in thermoses
Each liquid nitrogen dewar has a double-walled design, where the space between the walls is filled with a technical vacuum. This reduces heat conduction and evaporation of liquids.
Aerospace-grade aluminum and stainless steel with increased resistance are used for production. Selected models also use borosilicate glass elements and Classic vessel designs, which, thanks to their spherical shape, facilitate pouring and minimize losses.
This type of equipment meets quality standards such as APRAGAZ and ISO 13485, which confirms its suitability in medical and laboratory applications.
Systems for the internal organization of biological samples
In larger tanks, the liquid nitrogen container allows the use of organizational systems such as cassettes, racks, and cryogenic frames. They allow you to store multiple samples at once and find them quickly without the risk of thawing the entire contents. Such solutions are standard in cell banks and biological laboratories.
Modern cryogenic systems also use specialized Cryo vessels that facilitate the safe storage and transport of biological samples in ultra-low temperature conditions.
Criteria for selecting tank capacity for individual industries
The selection of the right liquid nitrogen container depends on the intensity of the work and the type of application:
- 3–6 l – dermatological offices and cryotherapy
- 10 l – physiotherapy facilities and small laboratories
- 30-50 l – large research centres, industry, automatic systems
The right selection affects not only the comfort of work, but also the operating costs and the frequency of replenishment of liquid nitrogen.
Principles for safe operation and filling with liquefied gas
Working with a liquid nitrogen container requires full personal protection:
- cryogenic gloves resistant to extreme temperatures
- protective goggles to protect the eyes from fumes
- face shields
- protective gowns or laboratory clothing
When using liquid nitrogen dewar, it must not be tightly closed. Loose covers or safety valves are always used to allow controlled evaporation of the gas and to avoid pressure build-up.
Procedures for transport and correct marking of cargo
The transport of liquid nitrogen containers must take place in an upright position, in well-ventilated vehicles, preferably with an open cargo space or special stabilizing handles.
Each cargo should be labeled as hazardous material in accordance with ADR regulations. During the transfer, dedicated levers and transport trolleys are used, which minimize the risk of the tank overturning.
Mechanisms to protect against pressure build-up
Each liquid nitrogen container includes safety solutions that protect against excessive pressure build-up. Most often these are vent valves or non-hermetic covers.
This allows the evaporating nitrogen to escape freely, eliminating the risk of damage to the tank or rupture.
Digital monitoring systems and dispensing accessories
Modern liquid nitrogen dewars often include systems for monitoring liquid levels, temperature and operating time. In more advanced installations, automatic dosing systems and integration with refrigeration equipment and low-temperature freezers are used.
Such solutions also work with devices such as laboratory freezers and low-temperature freezers, which allows for full control of the sample storage process.
In more complex laboratory installations, cryogenic systems can also work with heating devices that support controlled material preparation and stabilization prior to the cooling process.
Required quality standards and industry approvals
Professional liquid nitrogen containers must meet stringent quality standards and have the appropriate certifications to operate in cryogenic conditions. Most often, these are ISO certificates and safety attestations confirming compliance with medical and industrial requirements.
Many applications also use equipment that is compatible with refrigeration equipment and laboratory systems, which increases its versatility.