LONDON - s4story -- When it comes to protecting irreplaceable biological samples embryos, sperm, oocytes, stem cells, and tissue the quality of your liquid nitrogen dewar can make all the difference. Whether you're running a busy IVF clinic, a fertility research facility, or a hospital cell-banking programme, choosing the right cryogenic storage dewar is one of the most critical decisions you'll make.

The Cryolab CryoNest® Series has been purpose-built to meet the demands of modern biological laboratories combining exceptional LN2 storage capacity, innovative proprietary rack systems, and long-term reliability in a compact, cost effective design that outperforms any standard 20L liquid nitrogen dewar or 50L liquid nitrogen dewar on the market.

What Is a Liquid Nitrogen Dewar?

A liquid nitrogen dewar also called an LN2 storage vessel, cryogenic dewar, or nitrogen storage dewar is a specialised, vacuum-insulated container designed to safely hold liquid nitrogen at ultra-low temperatures (−196°C). In IVF and reproductive medicine, these vessels are used for the long-term cryopreservation of biological samples including embryos, sperm, eggs (oocytes), and tissue biopsies.

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Unlike standard industrial dewars, biological-grade LN2 storage tanks must offer precise temperature stability, flexible racking systems, and robust clinical safety certifications — requirements that sit at the heart of the CryoNest® design philosophy.

CryoNest® Series: High-Capacity LN2 Storage Vessels (https://cryolab.co.uk/product/cryo-storage-ln2-vessel-2/)

Cryolab CryoNest Series of Racked LN2 Storage Tanks are designed to optimise efficiency, storage capacity, and ease of use. The Series includes three distinct models, each with a compact and versatile design that enables easy sample access, maximises space, and dramatically reduces the storage cost per patient:

• CryoNest XL ideal for growing clinics ready to move beyond a standard 20 litre liquid nitrogen dewar
• CryoNest XXL the most popular model, offering an exceptional capacity-to-footprint ratio
• CryoNest XXXL the ultimate large liquid nitrogen dewar for high-volume IVF and cell storage programmes

All three models range from 95 to 175 litres in size capable of holding significantly more samples than a standard 47L tank — yet they maintain an almost identical footprint, with much longer hold times.

Why Upgrade from a Standard 20L or 50L Liquid Nitrogen Dewar?

Many IVF labs start out with a 20 litre liquid nitrogen dewar or a 50L liquid nitrogen dewar — practical for smaller volumes, but quickly outgrown as patient numbers rise. Frequent LN2 refills increase costs, and limited rack capacity creates storage headaches.