Can I Bring Formaldehyde Solution, Less Than 10 Percent on a Plane to United Kingdom?
Formaldehyde Solution, Less Than 10 Percent
Restrictions Apply
Special Rules Apply
According to CAA guidelines, less than 10% formaldehyde not restricted as HAZMAT. Carry-on: 3.4oz limit. Checked: leak-proof packaging with absorbent material strongly encouraged. Full-strength Formalin (35-40%) is over 10% — see biological specimens entry.
The final decision rests with the CAA officer on whether an item is allowed through the checkpoint. Official CAA Rules →
Quick Rule
Under 3.4oz (100ml)
Allowed in carry-on
Over 3.4oz (100ml)
Must go in checked bag
Checked Baggage
Allowed in any size
Source: Official CAA Regulations ↗Updated: May 20, 2026
Also known as
formaldehydeformalin diluteformaldehyde solutiondilute formalin
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