Zeptomole (zmol): Tiny SI Unit for Measuring Amount of Substance
The zeptomole (symbol: zmol) is an SI-derived unit of amount of substance equal to 10−21 mole. It combines the SI prefix zepto-, meaning one sextillionth, with the mole, the SI base unit for amount of substance. The zeptomole enables scientists to express extraordinarily small quantities of matter in a standardized SI format.
What Is a Zeptomole?
A zeptomole is a unit of amount of substance equal to 10−21 mole. It is one-thousandth of an attomole and one thousand yoctomoles.
The unit is particularly useful when measuring extremely small numbers of atoms, molecules, ions, or other elementary entities in cutting-edge scientific research.
History of the Zeptomole
The SI prefix zepto- was officially adopted by the General Conference on Weights and Measures (CGPM) in 1991 to extend the International System of Units (SI) for extremely small quantities. The zeptomole follows the same standardized naming convention as all other SI-prefixed mole units.
Current Uses of the Zeptomole
The zeptomole is used in analytical chemistry, molecular biology, nanotechnology, mass spectrometry, and single-molecule detection. It is especially valuable in experiments involving trace amounts of substances that cannot be conveniently expressed using larger units.
Zeptomole Conversion
One zeptomole is equal to:
- 1 × 10−21 mole (mol)
- 0.001 attomole (amol)
- 1,000 yoctomoles (ymol)
- 0.000001 femtomole (fmol)
You can use ChangeUnit to convert zeptomole to mole, attomole, yoctomole, and many other amount of substance units.