eFunda: Glossary: Units: Fraction: Part Per Billion

Part Per Billion (ppb) is a unit in the category of Fraction. It is also known as parts per billion. This unit is commonly used in the INT unit system. Part Per Billion (ppb) has a dimension of nil (fraction) where L is length, T is time, N is amount of substance, and I is electric current. It can be converted to the corresponding standard SI unit by multiplying its value by a factor of 1E-009.

Note that the seven base dimensions are M (Mass), L (Length), T (Time), Q (Temperature), N (Aamount of Substance), I (Electric Current), and J (Luminous Intensity).

Other units in the category of Fraction include Carat (karat) (ct, Kt), Part Per Hundred (pph, %), Part Per Hundred Million (pphm), Part Per Hundred Thousand (ppht), Part Per Million (ppm), Part Per Quadrillion (ppq), Part Per Tera (ppt), and Part Per Thousand (ppt).

Glossary: Units: Thermal Heat Capacity: Joule Per Kilogram

Glossary: Units: Angular Velocity: Radian Per Second

Glossary: Units: Mass: Dram (troy)

Glossary: Units: Pressure: Megapascal

Glossary: Units: Linear Momentum: A.u. of Linear Momentum

Glossary: Units: Acceleration: Inch Per Square Second

Glossary: Units: Length: Cable Length (UK)

Glossary: Units: Dynamic Viscosity: Poise

Glossary: Units: Entropy: Joule Per Kelvin

Glossary: Units: Electric Resistance: Ohm

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