part per million
http://purl.obolibrary.org/obo/UO_0000169
Term info
database cross reference
- NCIt:C48523
- SNOMEDCT:258731005
definition
A dimensionless concentration notation which denotes the amount of a given substance in a total amount of 1,000,000 regardless of the units of measure used as long as they are the same or 1 part in 10^[6].
has exact synonym
10^[-6], ppm