parts per thousand
"A dimensionless concentration notation which denotes the amount of a given substance in a total amount of 1000 regardless of the units of measure as long as they are the same." [UOC:GVG]
10^[-3]
ppth
parts per thousand based unit
parts per thousand
"A dimensionless concentration notation which denotes the amount of a given substance in a total amount of 1000 regardless of the units of measure as long as they are the same." [UOC:GVG]
10^[-3]
ppth