Type
Common Exapmples
Domestic
International
Domestic Mail
Pub 52
Maximum Amount Permitted in Mail
Additional Information
Air
Surface
Liquid and Solid
Batteries with liquid electrolyte, hydrochloric acid
N
348.21a
None
Nonspillable batteries may be permitted per 348.22b2.
Mercury, mercury-containing items (thermometer, etc.)
Appendix A
Mercury and items containing mercury are always prohibited. Trace amounts may be accepted per Packaging Instruction 8C.
