How long do IsoPacks (white, blue) maintain their temperature?
If IsoPacks (in an IsoRack) are sealed in an insulating box (IsoSafe), a temperature of 0 °C (in the white packs) can be maintained for at least 6 hours and –21 °C (in the blue packs) for > 3 hours. If the IsoPacks are in an open insulating box, 0 °C can be maintained for roughly 4 hours and –21 °C for 1–2 hours. If the IsoPacks/IsoRacks are not placed in an insulating box, a temperature of 0 °C can be held for 1.5–3 hours and –21 °C can be held for 0.5–1 hour.
