Contents

UnitDispersion

A unit of measure for specific quantities of dispersion.

Declaration

class UnitDispersion

Overview

You typically use instances of UnitDispersion to represent specific quantities of dispersion using the NSMeasurement class.

Dispersion

Dispersion describes the amount of a constituent divided by the amount of all other constituents in a mixture. Dispersion is a dimensionless quantity that is commonly expressed in “parts-per” notation, such as “parts per million” (ppm), to describe small relative quantities.

The UnitDispersion class defines its baseUnit() as partsPerMillion.

Name

Method

Abbreviation

Parts Per Million

Partspermillion

ppm

Topics

Accessing the Base Unit

Accessing Predefined Units

See Also

Concentration and Dispersion