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Glossary » Units » Fraction » Part Per Hundred Million
Part Per Hundred Million (pphm) is a unit in the category of Fraction. It is also known as parts per hundred million. This unit is commonly used in the INT unit system. Part Per Hundred Million (pphm) 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-008.
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 Billion (ppb), Part Per Hundred (pph, %), Part Per Hundred Thousand (ppht), Part Per Million (ppm), Part Per Quadrillion (ppq), Part Per Tera (ppt), and Part Per Thousand (ppt).

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