Integer number obtained by counting of entities, which are usually @M04002@, atoms or @I03158@.
Sources: Green Book, 2
nd ed., p. 39 [
Terms] [
Book]
PAC, 1996,
68, 957. (
Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 985 [
Terms] [
Paper]