Mercury
What is the carrier for Mercury?
For Mercury, carrier is USPS; restriction type is prohibited; scope is US Mail; conditions is Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier, recorded from its source on 2026-08-03.
Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier.
— usps.com, retrieved 2026-08-03
- Item category
- Mercury verified
- Carrier
- USPS our reading
- Restriction type
- prohibited our reading
- Scope
- US Mail our reading
- Conditions
- Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier. verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Scope
usps.com says scope is US Mail, as of 2026-08-03.
Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier.
https://www.usps.com/ship/shipping-restrictions.htm
pe.usps.com says scope is domestic mail (air and surface), as of 2026-08-10.
Mercury 8 UN2809 III Prohibited Prohibited
https://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf
Conditions
usps.com says conditions is Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier., as of 2026-08-03.
Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier.
https://www.usps.com/ship/shipping-restrictions.htm
pe.usps.com says conditions is Hazard class 8, UN2809, packing group III; domestic mail air: Prohibited; domestic mail surface: Prohibited, as of 2026-08-10.
Mercury 8 UN2809 III Prohibited Prohibited
Sources
- usps.comhttps://www.usps.com/ship/shipping-restrictions.htm
- pe.usps.comhttps://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf