# Non-infectious specimens in preservative solutions (formaldehyde, ethanol) — Postal shipping restrictions by item category

For Non-infectious specimens in preservative solutions (formaldehyde, ethanol), carrier is FAA (air transport); restriction type is restricted; scope is carry-on and checked baggage; conditions is No more than 30 ml of free liquid solution in each inner packaging and no more than one liter in the entire outer package; marked 'Scientific research specimens, 49 CFR 173.4b applies', recorded from its source on 2026-08-10.

- **Item category:** Non-infectious specimens in preservative solutions (formaldehyde, ethanol) _(verified: appears in the quote below)_
- **Carrier:** FAA (air transport) _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** carry-on and checked baggage _(our reading, not quoted from the source)_
- **Conditions:** No more than 30 ml of free liquid solution in each inner packaging and no more than one liter in the entire outer package; marked 'Scientific research specimens, 49 CFR 173.4b applies'. _(verified: appears in the quote below)_

## What the source says

> No more than 30 ml of free liquid solution in each inner packaging and no more than one liter in the entire outer package.

## Source

- https://www.faa.gov/hazmat/packsafe/printable-chart

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).