People Power Movement (Philippines) Personnel & Property Manager Parent Partition Mapping People’s Progressive Movement Period of Performance and Maintenance Pre-Assembled Power Module (wind turbines) Programme and Project Management (various organizations) Planning and Performance Management (various organizations) Piecewise Parabolic Method
Parts per million (ppm) is a commonly used unit of concentration for small values. One part per million is one part of solute per one million parts solvent or 10 -6. Parts per million and other "parts per" notations (e.g., parts per billion or parts per trillion) are dimensionless quantities with no units.
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what is ppm stand for
