No. And the gap is not marginal.
Why minus 80 is nowhere near close enough
Professional guidance puts the ceiling for cryostorage at around minus 150°C: ASRM’s 2020 committee opinion describes vapour phase storage as typically minus 150°C and lower, and ESHRE’s 2026 laboratory recommendations validate transport against the same threshold. A mechanical freezer at minus 80°C is roughly 70 degrees the wrong side of that. Vitrified embryos and oocytes moved there risk devitrification, and slow frozen sperm is outside its validated range too.
What the failure plan needs instead
- A second LN2 vessel with spare rack positions, kept charged. For a clinic running one CryoNest® XXL that means deliberately holding a smaller vessel part empty.
- A charged dry shipper big enough to bridge hours, not days. The CryoStork® V10 at 10 litres is the largest in the range.
- A written transfer sequence: which racks move first, who witnesses, how it is recorded.
- Alarm escalation that reaches a named person at 3 am.
- A reciprocal arrangement with a neighbouring laboratory for total loss.
Then rehearse it
Run the plan against a stopwatch. A plan nobody has tested is a hope. The CryoStork® V10 page gives the dimensions and canister layout for the bridging step.
