A 50 litre liquid nitrogen dewar is a vacuum-insulated storage vessel used to maintain biological samples at cryogenic temperatures, typically around minus 196 degrees Celsius. It is the most widely used vessel size in UK IVF clinics, andrology units, and veterinary reproduction facilities because it balances storage capacity with practical manageability.
What does 50 litres actually mean for sample storage?
The 50 litre figure refers to the total internal liquid nitrogen volume, not the number of samples the vessel holds. Usable storage is determined by the canister configuration inside. A six canister arrangement offers more clearance per position and faster retrieval. A ten canister arrangement maximises sample positions within the same footprint but requires a more disciplined labelling system.
How long does a 50L dewar hold its charge?
Under static conditions with the lid closed, a quality 50 litre dewar holds charge for 50 to over 100 days depending on the model and insulation specification. In a clinical setting with daily access, the real-world hold time is shorter. Labs typically refill every six to eight weeks under normal operating conditions.
What should you check before buying?
Neck opening diameter determines whether your existing canister system is compatible. Vacuum retention period tells you how long the insulation remains effective. Warranty terms covering vacuum failure indicate how much confidence the manufacturer has in long-term performance. ISO certification and the supplier’s quality management system matter for clinical environments.
Which 50L dewar does Cryolab supply?
Cryolab supplies the CryoCan 47-10, a ten canister 50 litre liquid nitrogen dewar built for clinical use. For labs that need to step up in capacity, the CryoNest XL is the natural next choice. Cryolab is ISO 9001:2015 certified and supplies the full range of canisters, cryocanes, and consumables from a single source.
