| Product Overview
The 100L Dewar Flask is a compact, high-performance low-temperature thermal insulating pressure vessel designed for storing and transporting cryogenic liquids such as liquid oxygen (LO2), liquid nitrogen (LN2), liquid argon (LAr), and liquefied natural gas (LNG). Manufactured by SLDW, this dewar flask features a double-layer stainless steel vacuum structure with a 25-layer multi-insulation system. The inner tank stores cryogenic media, while the vacuum-sealed sandwich layer between tanks minimizes heat transfer, ensuring superior thermal insulation. Available in models DPL-100 and DPL-100H with working pressures of 1.4 MPa and 2.01 MPa respectively, it offers an effective volume of 95L (geometric volume 100L) and caters to medium-volume cryogenic needs. Its compact dimensions (456×1247 mm) and lightweight design make it ideal for laboratories, small-scale manufacturing, and on-site applications requiring portability and efficiency.
| Core Advantages
Compact Design & Portability
With a diameter of 456 mm and height of 1247 mm, the 100L Dewar Flask is space-saving and easy to store. Equipped with integrated handles and optional wheels, it enables convenient maneuvering in laboratories, workshops, and medical facilities.
Efficient Thermal Insulation
Utilizing high-vacuum technology and 25 layers of thermal insulation materials, this dewar flask achieves minimal heat transfer, reducing evaporation loss of cryogenic liquids. It maintains stable low temperatures for extended periods, ensuring media integrity.
Reliable Safety Features
Built with a durable stainless steel outer casing, it includes safety valves, pressure gauges, and rupture disks for comprehensive pressure management. Strict quality control during production ensures compliance with international standards (TS/24159-2009), guaranteeing safe operation.
Medium-Capacity Versatility
With a maximum filling capacity of 97 kg for oxygen, 69 kg for nitrogen, and 120 kg for argon, it meets medium-volume storage requirements. It supports multiple cryogenic liquids, including LNG (37 kg) and LCO2 (102 kg for DPL-100H), adapting to diverse industry needs.
Low Maintenance & Cost-Effective
As a passive system without power requirements, it needs minimal daily upkeep. Its durable construction resists physical impact and corrosive environments, extending service life. Reduced evaporation loss lowers refilling costs, offering long-term value.
Purity Protection
A precision sealing system and stainless steel inner tank prevent contamination, preserving the purity of stored media—essential for laboratory reagents, high-purity gases, and food-related applications.
| Application Fields
Laboratory & Scientific Research
Sample Preservation: Stores blood, vaccines, and biological samples (cells, strains) at ultra-low temperatures for research purposes.
Detector Cooling: Cools semiconductor detectors (germanium lithium) in electron microscopes (SEM, TEM) and spectrometers to enhance sensitivity.
Material Science: Supports cryogenic grinding of heat-sensitive materials like spices and plastics.
Small-Scale Manufacturing
Precision Welding: Supplies LO2 and LAr for small-scale metal welding and cutting operations.
Electronics Manufacturing: Uses LN2 for cooling electronic components during testing or assembly.
Food Processing: Enables small-batch flash freezing of specialty foods, preserving freshness and texture.
Healthcare Facilities
Medical Laboratories: Stores biological specimens and reagents for diagnostic testing.
Dental & Dermatology Clinics: Provides LN2 for cryosurgery treatments (e.g., wart removal).
Vaccine Storage: Maintains ultra-low temperatures for vaccine preservation in clinics and small hospitals.
Hospitality & Culinary Arts
Beverage Chilling: Used in bars and restaurants to keep beer, wine, and specialty beverages cold for extended periods.
Molecular Gastronomy: Creates liquid nitrogen ice cream and other innovative dishes in high-end restaurants.
Wine Chilling: Stylish decanter-shaped models quickly chill wine to optimal serving temperatures.
Project | DPL - 100 | DPL - 100H |
Work Pressure（Mpa） | 1.4 | 2.01 |
Diameter x Height（mm） | 456x1247 |
Geometric Volume（L） | 100 |
Effective Volume（L） | 95 |
Maximum Filling Capacity（kg） | Oxygen | 97 | 97 |
Nitrogen | 69 | 69 |
Argon | 120 | 120 |
Natural Gas | 37 | —— |
Carbon Dioxide | —— | 102 |
Oxidation 2 Nitrogen | —— | —— |
| Operation & Safety Guidelines
Basic Safety Precautions
Always wear insulated gloves and safety goggles when handling the dewar flask to prevent frostbite.
Operate in well-ventilated areas—evaporated cryogenic gases can displace oxygen, causing hypoxia.
Do not tamper with safety valves or pressure relief devices; ensure they are free from blockages.
Filling & Usage Tips
Follow the maximum filling capacity guidelines (avoid overfilling) to prevent pressure buildup.
Use compatible hoses and fittings for liquid filling and gas withdrawal to ensure airtight connections.
Monitor pressure gauges regularly; if pressure exceeds safe limits, activate the pressure relief valve.
Transportation & Storage
Short-distance movement: Use a dedicated trolley and secure the dewar flask in an upright position.
Avoid dropping or impacting the unit—damage to the outer casing or insulation can compromise performance.
Store in a dry, cool area away from direct sunlight and heat sources.
Maintenance Checklist
Clean the outer surface regularly with a dry cloth to remove dust and debris.
Inspect for signs of damage (dents, cracks) or abnormal frosting—contact the supplier if issues arise.
Keep the vacuum plug and bottle cap securely closed when not in use to maintain insulation efficiency.
Avoid storing in corrosive environments to protect the stainless steel finish.
| Production Process
Precision Material Cutting: High-grade stainless steel sheets are cut to size for the inner and outer tanks using CNC technology.
Tank Forming & Welding: The inner and outer tanks are formed via spinning or stamping, followed by precision welding to ensure airtightness.
Insulation Layer Application: 25 layers of thermal insulation materials are wrapped around the outer wall of the inner tank to enhance heat resistance.
Vacuum Evacuation: The sandwich layer between the two tanks is pumped to high vacuum to eliminate heat transfer through conduction and convection.
Safety System Integration: Installation of safety valves, pressure building regulators, rupture disks, and liquid level gauges for comprehensive control.
Quality Assurance Testing: Conducting pressure tests (TP 4.6 MPa), vacuum retention tests, and leakage detection to meet industry standards.
Final Assembly & Labeling: Adding handles, wheels, and user-friendly valves; labeling with technical parameters, safety instructions, and certification marks.
| FAQ
How to prevent frostbite when using the 100L Dewar Flask?
Always wear thick antifreeze gloves and goggles. Avoid direct contact between skin and the dewar flask’s outer wall or cryogenic liquids.
Is it normal for the dewar flask to make hissing sounds?
A faint hissing sound from the pressure relief valve is normal—it indicates pressure regulation. Loud or continuous hissing may signal a leak; stop use and inspect.
How often should the vacuum be checked?
Regularly touch the outer wall—abnormal large-area frosting indicates vacuum failure. For critical applications, schedule professional vacuum checks annually.
Can the 100L Dewar Flask be used for LCO2 storage?
Yes, the DPL-100H model supports LCO2 storage with a maximum filling capacity of 102 kg. Ensure compatibility with the specific model before use.
| Call to Action
Discover the perfect balance of compact design and high performance with the 100L Dewar Flask—ideal for laboratories, small businesses, and healthcare facilities. Benefit from superior thermal insulation, reliable safety features, and versatile cryogenic storage capabilities. Inquire today to get a personalized quote or technical support from our experts. With 1000 units in stock, add to Basket now for fast factory-direct delivery. Elevate your cryogenic storage solution—choose the 100L Dewar Flask for efficiency, safety, and value!
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