counts per minute

http://pid.geoscience.gov.au/def/voc/ga/uom/cpm

alt label
cpm
definition Measure of radioactivity. The number of gamma-ray photons  recorded by a gamma-ray detector in a particular energy window over a period of 1 minute. Specific energy windows are used for measuring the
scope note Measure of radioactivity. The number of gamma-ray photons  recorded by a gamma-ray detector in a particular energy window over a period of 1 minute. Specific energy windows are used for measuring the activity due to each of potassium, uranium and thorium. A total count window is used to measure the total activity.
type
Resource original
Concept original
in scheme
http://pid.geoscience.gov.au/def/voc/ga/uom original
has top concept
cpm original
top concept of uom original