http://organs7mrbogqxhwa3yzxfynlzsskpsiogjo5aekeevcjf5cwohouaad.onion/faq.php
The heart can be kept in this liquid for no longer than 4-6 hours, lungs - 6-8 hours, liver - 12-15 hours, and kidneys - up to a maximum of 16 hours or 24-36 hours depending on current practices. Due to the limited storage time, it is not possible to transport the extracted organs over long distances.