Parts per Billion (ppb) is the number of mass unit of a contaminant per billion units of total mass, 1/1,000,000,000.
Related Definitions in the Project: The Property and Unit
Parts per Billion (ppb) is the number of mass unit of a contaminant per billion units of total mass, 1/1,000,000,000.
Related Definitions in the Project: The Property and Unit