parts-per notation
set of pseudo units to describe small values of miscellaneous dimensionless quantities
basis point
one hundredth of a percent
per mille
unit for parts per thousand
per cent mille
one-thousandth of a percent
part per billion
unit of measurement based on number of particles
parts per trillion
unit of measurement
parts per million
unit of measurement based on number of particles
percent
number or ratio as a fraction of 100
parts per quadrillion
unit of measure