noun, noun which may take the genitive case particle 'no'
low concentration
Used in scientific, medical, and technical contexts to describe a substance present in a small amount relative to the total volume or mixture. Can also be used attributively with の.
Gargle with a low-concentration salt solution.
The groundwater in this area contains low concentrations of arsenic.
Compound of 低 (てい, 'low') and 濃度 (のうど, 'concentration').