What Are IVF Canisters and How Are They Used in Cryogenic Storage?

IVF canisters are the cylindrical metal containers that sit inside a liquid nitrogen storage vessel and hold the cryocanes from which samples are suspended. Each canister typically accommodates between three and six cryocanes, depending on the canister format and the vessel design. The canister is the primary organisational unit within a storage vessel: most laboratory inventory management systems record sample location by vessel, canister, cryocane, and goblet position.

What materials are IVF canisters made from?

IVF canisters are manufactured from stainless steel or aluminium, both of which are rated for sustained immersion at -195.8 degrees C. Stainless steel canisters are more mechanically robust under frequent handling. Aluminium canisters are lighter and transfer heat more quickly during initial loading, which can be a relevant consideration for slow-freeze protocols where the cooling rate in the final plunge phase matters.

How many canisters fit in a cryogenic storage vessel?

The number of canisters a vessel accommodates depends on its internal neck diameter and canister format. A typical mid-range IVF storage vessel holds four to six canisters. High-capacity vessels can hold more, particularly where slim-profile canister configurations are used. Canister count is one of the key specifications to verify when selecting a storage vessel for a growing sample inventory.

How are IVF canisters labelled for traceability?

Each canister carries a patient or section identifier that links to the laboratory’s storage management record. In an HFEA-licensed laboratory, the canister labelling system is part of the documented traceability chain, and a canister with a damaged or missing label must be treated as a traceability event.

A laboratory that runs eight canisters across two vessels without a documented inventory management system is one staff absence away from a serious sample traceability problem. The canister is not just a container – it is a traceability unit.

Cryolab supplies IVF canisters and cryogenic storage accessories. Browse the full range at cryolab.co.uk/cryogenic-storage-visotubes-cryocanes-cryosleeves/.