Dewar Flasks

Dewar Flasks — High-Performance Cryogenic Containers for Safe Storage and Transport of Liquid Gases

Dewar Flasks supplied by REAL GAZ are high-efficiency, vacuum-insulated cryogenic vessels designed for the storage, handling, and transportation of liquefied gases such as Liquid Nitrogen (LN₂), Liquid Oxygen (LOX), Liquid Argon (LAr), and Liquid Carbon Dioxide (CO₂ (L)).
Manufactured in accordance with ISO 21029, EN 13458, and TPED / ADR standards, REAL GAZ Dewars provide exceptional thermal insulation, minimal evaporation loss, and maximum operational safety.

All models are tested and certified for use in industrial, medical, and scientific environments, offering precision, durability, and mobility under extreme temperature conditions.

⚙️ Industrial, Medical, and Scientific Applications

🧊 Cryogenic Storage — long-term preservation of biological materials, vaccines, and cell cultures in laboratories and medical facilities;
⚗️ Industrial Cooling and Processing — used for cryogenic cleaning, metal treatment, and material testing;
🔬 Research and Analytical Work — supports spectroscopy, semiconductor studies, and cryo-experiments requiring constant low temperatures;
🚀 Aerospace and Engineering — essential for superconductivity research, vacuum-system cooling, and thermal regulation tests;
🍎 Food and Beverage Applications — provides rapid freezing and cooling in controlled-atmosphere production lines.

REAL GAZ supplies Dewar Flasks with capacities from 1 L to 200 L, available in portable, static, and transportable configurations.

💡 Advantages of REAL GAZ Dewar Flasks

✅ Certified Safety & Quality — produced under ISO 21029 / EN 13458 / TPED / ADR, meeting global safety standards;
❄️ Superior Thermal Efficiency — double-walled vacuum insulation ensures minimal heat transfer and longer holding time;
⚙️ Durable Design — corrosion-resistant stainless steel or lightweight aluminum construction;
🔒 Pressure & Safety Control — equipped with relief valves, burst discs, and venting systems to maintain stability;
🧾 Full Documentation — each unit delivered with Certificate of Conformity, pressure test certificate, and MSDS for the corresponding gas.

🔬 Laboratory Certification and Quality Control

All Dewar Flasks undergo thorough inspection in the REAL GAZ ISO 17025-accredited analytical laboratory, where each vessel is checked for vacuum integrity, insulation performance, and mechanical strength.
Quality control follows ISO 21013, EN 13458-3, and ADR periodic testing protocols.

REAL GAZ also provides:

Vacuum re-evacuation and maintenance for long-term Dewar performance;
Valve, gauge, and neck-tube inspection;
Customized labeling and color coding by gas type;
Refilling and service programs for medical and laboratory clients.

This ensures that every Dewar Flask delivered by REAL GAZ meets the highest standards of safety, efficiency, and reliability.

🌍 Safety and Handling

All Dewar Flasks from REAL GAZ are fitted with pressure-relief devices and labeled according to ADR / UN codes.
They should always be stored upright, in ventilated, shaded areas, away from heat sources.
Operators must use cryogenic gloves, protective visors, and insulated footwear when handling liquid gases.
Each delivery includes Safety Data Sheets (MSDS) and handling guidelines in compliance with ISO 11625 and EN 13458.

⚙️ Performance and Reliability

Combining advanced cryogenic engineering, certified manufacturing, and precise laboratory testing, REAL GAZ offers Dewar Flasks that deliver superior performance, safety, and longevity in every cryogenic operation.
Our products are trusted in industry, medicine, and science, where maintaining controlled ultra-low temperatures is critical.

REAL GAZ — engineered insulation, certified cryogenic quality.