Will it fly?

Can you bring Formaldehyde solution, less than 10 percent on a plane?

Coop checked the book. Here's the ruling for Formaldehyde solution, less than 10 percent:

CARRY-ON
Yes
CHECKED BAG
Yes (Special Instructions)

What the TSA says

Formaldehyde solutions of less than 10% are not restricted as hazardous materials. Leak-proof packaging with absorbent material is still strongly encouraged.  For formaldehyde solutions containing more than 10% formaldehyde, see separate entry for "Biological specimens in preservative solutions." Tip: Full-strength "Formalin" is typically 35%-40% formaldehyde by volume. So a solution that is less than 25% Formalin would be less than 10% formaldehyde and not restricted.

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STOWAWAY.WILL IT FLY?
Formaldehyde solution, less than 10 percent
CARRY-ON
Yes
CHECKED
Yes (Special Instructions)
Coop checked the book · stowaway.pages.dev

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Based on official TSA guidance. The final decision rests with the TSA officer at the checkpoint.