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.
- Item category
- Mercury
- 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.
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.
What the source says
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
Source
- usps.comhttps://www.usps.com/ship/shipping-restrictions.htm