Born from particle-accelerator vacuum physics. Vacuum insulation works by removing the air that carries heat. Pull hard enough and convection and gas conduction collapse entirely: what's left is radiation. Crìa holds its gap between 10⁻⁶ and 10⁻⁹ mbar (below a billionth of an atmosphere, and reaching toward a trillionth) deep in the molecular-flow regime, so every reflective foil stays fully active at any temperature. No cryopumping. No upright-only constraint. No decay over time.
A conventional cryo Dewar lives at 10⁻²–10⁻³ mbar and leans on cryopumping to get there, which is why most of its multilayer insulation sits inactive and why it has to stay upright. Crìa goes three to four orders of magnitude deeper, and the rules change (in the physics, and in what the product can do).
Below 10⁻⁶–10⁻⁹ mbar there are too few gas molecules left to carry heat by collision. The transport regime becomes molecular flow: the only path left for heat across the gap is thermal radiation.
With radiation isolated, Crìa's fully active, high-vacuum-compatible MLI intercepts it layer by layer. A cryopumped Dewar keeps only a fraction of its foils working; a single-layer flask soon runs out of layers. Crìa's new insulation takes the best of both: every layer active, across the entire range.
The envelope is fully welded stainless steel: no glues, no seals, no polymer neck. Gas permeation is virtually nil and outgassing is minimal, so this ultra-high vacuum doesn't drift and never needs re-pumping. It holds far longer than conventional systems, and, welded closed, works in any orientation.
Crìa holds temperature uniform to under 2 °C across the whole container, even at −196 °C. What you load is what arrives, with no hot spots.
Because so little heat gets in, Crìa needs far less refrigerant for the same cold life, or holds far longer on the same charge. Less coolant means less weight, a smaller footprint, and a lower cost per shipment.
An advanced datalogger is integrated from the start: no wiring to break, no probe holes drilled into the vessel, no cumbersome add-ons. Continuous, exportable temperature data, out of the box.
A cryopumped dewar reaches its working vacuum by condensing gases on walls chilled by liquid nitrogen. That mechanism only works efficiently near −196 °C. At dry-ice temperatures, around −78 °C, the walls are nowhere near cold enough, so cryopumping is largely ineffective and the vacuum, along with the insulation that depends on it, is at its weakest.
A great deal of biological material travels at exactly that temperature. Crìa's vacuum is established during manufacturing and does not depend on how cold the payload is, so insulation performance at −78 °C is the same as at −196 °C. The advantage over a cryopumped dewar is largest precisely where conventional equipment is weakest.
The same welded high-vacuum core ships in two form factors: carry-on personal transport and compact logistics.
