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 to 10⁻³ mbar and leans on cryopumping to get there, which is why most of its multilayer insulation sits inactive. It also has to stay upright, because its neck is glued. Crìa goes three to four orders of magnitude deeper and is fully welded, so 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.
At Crìa's vacuum level, gas no longer carries heat. What's left is radiation, and our multilayer insulation stops it one reflective layer at a time. In a conventional Dewar, cryopumping leaves most of those layers idle; a vacuum flask has just one barrier. In Crìa, every layer works, from +8 °C to −196 °C.
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.
The datalogger is built into the Smart Lid: temperature, shocks, orientation and every opening are logged from the moment you close it. When the trip ends, you have a PDF report ready for your QA team. No cables, no extra device, nothing to forget.
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. A cryopumped Dewar needs cryogenic cold to hold its vacuum, so it performs worst at dry ice and PCM temperatures. That is exactly where Crìa's advantage is largest.
The same welded high-vacuum core ships in two form factors: carry-on personal transport and compact logistics.
