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Below you'll find answers to the questions we get asked the most about cryogenic freezing.
Are there regulations and guidelines covering the design of Cryorooms?

Air Products is a member of the BCGA (British Compressed Gases Association) which defines the Codes of Practice and Guidance Notes for the safe use in Gases and Equipment and so can provide advice on ensuring that your room meets all the relevant guidelines.

Am I better to store my samples in liquid or vapour?

Whilst most smaller aluminium freezers still store in liquid nitrogen, larger capacity modern auto-fill freezers like the MVE HEco units use nitrogen vapour as the storage medium whilst maintaining a vapour temperature of -190°C at the top of the inventory.

How pure is the liquid nitrogen supplied by Air Products?

The liquid nitrogen that Air Products supplies to all our customers is MDD (Medical Device Directive) certified to ISO 13485 with a purity of 99.999%.

I have requirement for cylinder gases. Can you provide these?

Air Products offers cylinders, the traditional solution for low volume of gas. For small and medium sized users, single cylinders offer a low-cost, versatile method of gas supply. Cylinders can be supplied in a full range of sizes, pressures and gas purities for a wide range of gases and gas mixtures. For larger volumes, Air Products can also supply manifolded cylinder packs.

Is there a more energy efficient alternative to mechanical ULT -80°C freezers?

Yes. Chart Biomedical have introduced the MVE Variō series, the innovative and energy efficient alternative for Ultra Low to Cryogenic storage.

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