Laboratory Cryogenic Dewar Flask — safe, compact cold sources for research benches
A laboratory cryogenic Dewar flask from REAL GAZ gives researchers a compact, vacuum-insulated source of liquid nitrogen that sits next to the instrument it serves.
Flasks are chosen for stability on benches, convenient pouring and easy cleaning between experiments.
Flasks are chosen for stability on benches, convenient pouring and easy cleaning between experiments.
Our laboratory range references ISO 21029-1, EN 13458 and ISO 23208, serving university and clinical laboratories.
A good laboratory routine keeps people safe and results repeatable. Fill flasks slowly with a funnel, keep the lid loose, and never lean over the neck. Wear a face shield when decanting and dry gloves that are loose enough to remove quickly. Label each flask with its content and date of filling. REAL GAZ includes a one-page summary of these steps with every first delivery, written for new students and technicians, and our staff are happy to answer questions about specific protocols such as cryopreservation or sample milling. When several research groups share a laboratory, a single central flask for refilling smaller bench flasks cuts waste and reduces the number of people handling liquid, which in turn improves safety.
🏭 Where Laboratory Cryogenic Flasks Are Used
- 🧪 Sample grinding — cryomilling of tissue, polymers and spices is done after pre-cooling in liquid nitrogen;
- 🔬 Spectroscopy — detectors in FTIR and X-ray systems are cooled from a topped-up flask;
- 🧬 Cryo-storage transfers — vials move from freezer to liquid nitrogen tank inside a portable flask;
- 🌡️ Calibration — low-temperature reference baths verify thermometers and sensors.
🧼 Care and Maintenance
- rinse and dry the inner surface regularly to avoid ice build-up and odours;
- inspect the neck for cracks or scratches before each fill;
- never use a flask whose vacuum has failed, which shows as heavy frosting on the outside.
💡 Why Choose REAL GAZ
- ✅ Bench-friendly design — compact footprints fit fume cupboards and crowded benches;
- 🧪 Predictable performance — published evaporation rates help you plan weekly refills;
- 🎯 Compatible liquids — analysed liquid nitrogen and argon are supplied for sensitive equipment;
- 🔒 Clear instructions — safe pouring, transfer and venting practices come with each delivery;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- multi-stage inspection of every vessel before filling;
- vacuum and insulation performance checks;
- moisture & impurity analysis of the filled liquid;
- leak testing and pressure integrity checks.
Our cryogenic liquids are shipped according to ADR / UN rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
Research teams that ask for a laboratory cryogenic Dewar flask usually also need dependable liquid supply, and REAL GAZ provides both. We supply universities and hospitals in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA with equipment and cryogens.
REAL GAZ — small flasks, serious science.