Where mentioned, Billion refers to 10, Trillion refers to 1012 (short scale).
MatterSpecification.v13.Cluster ยง 2.10.5.1
Becquerel per m
Milligram per m
Nanogram per m
Particles per m
Parts per Billion (10)
Parts per Million (10)
Parts per Trillion (1012)
Microgram per m
Where mentioned, Billion refers to 10, Trillion refers to 1012 (short scale).
See
MatterSpecification.v13.Cluster ยง 2.10.5.1