The border question has no general answer. It is per-country, per-organism, and sometimes per-customs-officer. Talk to the receiving institution first, always.

Add: get the material transfer agreement signed before shipping, not after. Customs asks for paperwork, not for vibes.

Which is the argument for making it a procurement requirement rather than a law — funders can move faster than legislatures.

This matches my experience. Also: never buy a -80 freezer sight unseen.

Rewriting firmware in Rust is fun but the actual reliability win here was the watchdog, which you could have added in C.

Screening baseline is good but voluntary. Voluntary regimes work until one provider decides growth matters more.