High Purity Dewar Distributor — clean cryogenic liquids for sensitive processes
As a high purity Dewar distributor, REAL GAZ supplies liquid nitrogen, argon, oxygen and helium in cleaned, vacuum-insulated vessels that protect the purity of the product.
Purity depends on the vessel as much as the gas, so every Dewar is purged and checked before it is filled.
Purity depends on the vessel as much as the gas, so every Dewar is purged and checked before it is filled.
Filling and cleanliness follow ISO 14687 where relevant, ISO 23208 and the principles of ISO 17025 for analytical traceability.
Typical high purity liquid nitrogen reaches 99.999 per cent, with oxygen below 3 ppm and moisture below 3 ppm, although the exact figures depend on grade and on your agreement. Maintaining those values means keeping the vessel dry, closed and free from frost at the neck. Our drivers fit clean transfer hoses and avoid open pouring wherever possible. If your instrument manufacturer sets a purity requirement, send it to our technical team and we will confirm whether a suitable grade and vessel combination is available before the first order. Distribution routes are planned so that sensitive customers receive Dewars soon after filling, which keeps the contact time between liquid and vessel wall short and limits the chance of contamination on the road.
🏭 Where High Purity Dewars Are Used
- 🔭 Analytical instruments — ICP-MS, GC and cryo-trapped systems rely on clean liquid nitrogen to avoid baseline noise;
- 💻 Electronics — wafer and component processes require inert, particle-controlled cryogenic supply;
- 🧲 Research magnets — superconducting systems use precooling with liquid nitrogen before liquid helium transfer;
- 💊 Pharmaceutical R&D — cryogenic grinding and lyophilisation trapping need contaminant-free coolant.
🧫 Keeping Purity Intact
- dedicated vessels are kept in one gas service only, so cross-contamination cannot occur;
- closed transfer lines limit air and moisture ingress during refilling;
- users should store Dewars upright, away from heat and in well-ventilated rooms.
💡 Why Choose REAL GAZ
- ✅ Distribution reach — regular routes bring Dewars to laboratories and factories across our markets;
- 🧪 Analysed product — each liquid batch is tested for oxygen, moisture and total hydrocarbons where applicable;
- 🎯 Fine specification — grades can be matched to your instrument manufacturer requirements;
- 🔒 Traceability — vessel and batch numbers link every delivery to its analysis record;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- multi-stage purification of the source liquid;
- vessel purging and vacuum verification;
- moisture & impurity analysis by calibrated instruments;
- leak testing and pressure integrity checks.
Cylinders and Dewars comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
Laboratories that rely on a high purity Dewar distributor value predictable specification, so REAL GAZ documents each delivery. We support research institutes, hospitals and electronics producers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA with careful handling from filling station to your door.
REAL GAZ — purity kept from our plant to your instrument.