Fewer than the brochure says, in almost every case, and the gap is a matter of format rather than exaggeration.
Capacity Figures Assume a Format
CBS Daisy Goblets are listed at up to 540 0.25 ml straws, 240 0.5 ml straws, or 168 high security straws. Three correct figures for one component. A vessel capacity built on the first will be roughly three times the real number for a laboratory running high security straws.
Ask for the Calculation, Not the Capacity
Give a supplier your straw volumes, goblet or visotube format and cane type, and ask what the vessel holds on that basis. The CryoNest XXL at 145 litres takes six racks of up to 30 compartments, and what that converts to in straws depends on your combination rather than on the vessel.
Size Against Accumulation
The Human Fertilisation and Embryology Authority confirmed that from 1 July 2022, following the Health and Care Act 2022, patients can store for up to 55 years with reconsent every ten years. Storage that once self cleared now accumulates, so the relevant figure is what you will hold in five years, not today. See embryo cryopreservation under the 55 year limit.
