Medical
Mercury Thermometer
Mercury thermometers are subject to strict aviation regulations due to the hazardous nature of mercury. Only one small medical or clinical mercury thermometer is permitted per passenger for personal use. This item must be carried in a protective case and is strictly limited to checked baggage only. Digital thermometers or those with red liquid are not subject to these specific hazardous material restrictions.
Baggage Rules
Cabin Baggage
✗ Prohibited
Checked Baggage
✓ Allowed
Quantity Limit
One small medical or clinical mercury thermometer per person.
Packaging Requirement
Must be in a protective case; official devices require leak-proof and puncture-resistant packaging.
Safety Guide
1
Check the color of the liquid inside the thermometer; silver indicates mercury, while red indicates non-hazardous alcohol.
2
Remember that aviation safety regulations permit only one medical or clinical mercury thermometer per passenger for personal use.
3
Ensure the thermometer is placed in a dedicated, rigid protective case to prevent it from breaking during the flight.
4
Do not pack your mercury thermometer in your carry-on bag, as it is strictly required to be in checked luggage.
5
Position the thermometer in the center of your suitcase, surrounded by soft items like clothes, to provide maximum cushioning.
6
Be aware that digital thermometers are not restricted and can be carried in either carry-on or checked baggage without issue.
7
If you are a government official carrying a mercury barometer, you must follow specific carry-on only rules and notify the airline.
8
Understand that mercury is highly corrosive to aircraft aluminum, which is why following these specific packing instructions is critical for safety.
Frequently Asked Questions
Yes, you are allowed to bring one small medical or clinical mercury thermometer for personal use. However, it must be packed in your checked baggage and is strictly prohibited in the cabin. It also needs to be stored in a proper protective case to prevent breakage and potential leaks.
Mercury is a hazardous material that can cause rapid corrosion if it comes into contact with the aircraft's aluminum structure. A spill in the cabin would be difficult to contain and could pose a significant safety risk to the flight. For this reason, aviation regulators require them to be placed in checked luggage within a protective container.
No, thermometers containing red liquid typically use colored alcohol rather than mercury and are not considered hazardous materials. You can carry these items in either your carry-on or checked baggage without any specific restrictions. Digital thermometers are also generally permitted in both types of luggage without limitations.
Each passenger is permitted to carry only one medical or clinical mercury thermometer for personal use. If you attempt to carry more than one, they may be confiscated during security screening or baggage checks. For official government use, different rules and higher limits may apply under specific conditions and authorizations.
This information is for guidance only. Your airline may apply different rules. Always check with your airline before travel.
Item Details
Item Name
Mercury Thermometer
Category
Medical